that the learned judge erred in law in that His Lordship failed to appreciate the defence case. Our decisions The accused's appeal [25] We shall deal first with the accused's appeal. We take the first and second complaints together since both relate to each other. Learned counsel for the accused submitted that the learned judge had failed to take into consideration that the store room and the Avanza where the drugs were found were used and accessible by many other people. Learned counsel further contended that the evidence given by PW3 (Lau Yieng Fung), PW4 (Abdul Latip bin Sapong), PW7 (Sapiee Ahmad), PW8 (Fadzliana bt Shibli) and PW9 (Dayang Nurhanisah bt Awang Khalid) had cast doubt on the prosecution's case and favourable to the defence. [26] We noted from the grounds of the learned judge that His Lordship had carefully considered the evidence before him. Appraisal of the grounds of judgment of the trial judge, we find that His Lordship spent a good part of his judgment assessing the evidence not only of PW3, PW4, PW7, PW8 and PW9, but also of the other witnesses for the prosecution (pp. 25 to 46 Appeal Record Vol.1). His Lordship was constantly mindful of the contradictions of the evidence before him. The learned trial judge had considered PW4's evidence, the father of the accused who testified that the Avanza was bought and registered under PW7's name. PW4 and PW7 were siblings. Both PW4 and PW7 testified that the accused had taken over the Avanza from PW7 who was transferred to Bintulu. PW7 testified that he had sold the Avanza to PW4 sometime in November 2007. PW7 explained that the car remained registered under his name since PW4's loan application was rejected by the bank. Since then, the Avanza was left with the accused. PW4 said the accused was operating a car rental business. PW4 further testified that he used to visit the accused's house and will always use the room upstairs. The key and remote control to the Avanza was found from the sling bag which belonged to the accused and which contained the accused's identity card and the key to the store room. PW9 had said that the sling bag belonged to the accused. Both PW4 and PW7 had denied any knowledge of the drugs found in the Avanza. His Lordship had also considered PW9's evidence, the accused's wife. PW9 too had denied knowledge of the drugs found in the Avanza and in the storeroom of the house. His Lordship had also examined PW9's testimony which he found contradicted with other witnesses. PW9 testified that on the 24.7.2015, her husband (the accused) had an open house for raya which started from afternoon till midnight and guests including PW8 and her family only left the house at around 12.00 a.m. However, PW9's evidence was in constrast with evidence of PW8 (Fadzliana) who did not say that it was an open house for raya. According to PW8, on 24.7.2015 at about 6.00 p.m., she received a call from PW9 for her car to be rented out. At about 9.10 p.m. she drove her car, a Proton Saga to the accused's house and handed over her car. Her husband came to pick her up. She did not say that she was invited for the open house. His Lordship had also considered that in PW9's statement to the police, PW9 did not mention that they had an open house on 24.7.2015. In fact, it was PW9's own admission that she had left her house at about 2.00 p.m. and only came back to the house at about 8.00 p.m. The raya open house issue was crucial since the defence of the accused was that his friends and guests were at the house till midnight and had accessed to the rooms including the store room which, according to PW9 and the accused, was usually unlocked. The learned trial judge made a finding that the door to the store room was locked on 24.7.2015 until it was unlocked by PW10 using the key found in the sling bag seized from the accused. In a nutshell, His Lordship had considered the alleged contradictions in the evidence of the prosecution's witnesses and found that the contradictions were minor in nature in relation to the use and access of the store room. We are mindful that in the assessment of the credibility of witnesses is assessing credibility is best left to the trial judge who had the audio visual advantage of witnesses' demeanour at trial. We see no compelling reasons which required our intervention hereof. [27] Learned counsel for the accused submitted that there was no evidence that the accused had possession and knowledge of the drugs found in the Avanza and in the storeroom. The accused's defence was that he had no knowledge of the presence of the drugs in the Avanza and the drugs in the store room, and that therefore he was not in possession of it. [28] The question of others having access to the storeroom was considered by the trial judge. His Lordship found that there was no evidence that someone had opened or unlocked the door of the store room or that someone had access and put the drugs inside the store room on 24.7.2015. What constitutes possession under the DDA 1952 is a question of law. However, whether possession has been proved in a given case is a question of fact and the circumstances that vary from case to case. In this respect, His Lordship relied on the cited authorities in PP v Abdul Rahman Akif [2007] 4 CLJ 337 (p. 24 Appeal Record Vol.1); Public Prosecutor v Denish a/l Madhavan [2009] 2 MLJ 104 (p. 32 Appeal Record Vol.1); Samundee Devan Muthu Kerishnan v PP [2010] 3 CLJ 269 and Nasruddin Daud v PP [2010] 2 CLJ 322 (p. 46 Appeal Record Vol.1), to come to a finding that the accused had possession and knowledge of the drugs that were recovered in the store room. [29] In Suhaimi Abdul Hamid v PP [2014] 1 LNS 268, Linton Albert JCA had said as follows: [9] The fact that others have access to the condominium unit and the second bedroom does not necessarily militate against a finding of possession by the appellant as was the case in the instant appeal... [10] It is patently clear, therefore, that possession need not be exclusive, a fortiori, access. Hence there is no merit in the appellant's argument premised on the mere fact that others had access to the second bedroom. Whether there was possession depends on the factual matrix of each given situation. Here, the drugs were found in the room occupied by the appellant and the appellant had admitted to be the owner of all the items in which the drugs were found." [30] SP10 testified that the store room was locked and he had asked the accused and PW9 as to the whereabout of the key to the store room. Both replied that they did not know where the key to the store room was kept. Using one of the keys from the sling bag that was found from the accused, SP10 managed to open the door to the store room. In other words, the accused knew where he had kept the key (P12B) but refused to inform SP10 when he was asked. On the floor of the store room, PW10 and PW11 found the following items: " (i) Beg plastic warna hitam berikat mengandungi (8) paket plastic lut sinar yang masing-masing berisi ketulan-ketulan mampat daun-daun kering disyaki dadah jenis ganja; (ii) beg plastic warna hitam berikat mengandungi (1) ketulan mampat daun-daun kering disyaki dadah jenis ganja; (iii) beg plastic warna hitam berikat mengandungi daun-daun kering disyaki dadah jenis ganja; (iv) (1) ketulan mampat daun-daun kering disyaki dadah jenis ganja". The drugs were not concealed. The house was occupied by the accused, his wife (PW9) and their two children of minor age. [31] PW10 then proceeded to the other room of the ground floor, where he found a metal grinder (P23), one digital scale (P11) and two pen knives (P22A & P22B). On analysis, PW5 confirmed traces of cannabis on the two knives (P4). There was also the presence of some residue plant materials in the metal grinder (P23), which upon analysis confirmed as cannabis (P4). It was not concealed. According to PW3 (Lau Ruen Lung) the house owner, the house was rented out to the accused and PW9 for a tenancy of one year commencing from 1 May 2015 (P5). Having considered all the circumstantial evidence adduced before him, His Lordship made an affirmative finding that the accused was in custody and control, that was an actual possession and knowledge of the nature of the drugs in the store room. [32] On the drugs found in the Avanza, His Lordship found that the accused had the use and possession over the Avanza of which the key and remote control of the same were kept in the sling bag that was found on the accused which also contained his identity card. PW9 and PW5 denied that the drugs in the Avanza belonged to them. The learned trial judge found that the accused had custody and control, and knowledge of the nature of the drugs in the Avanza. [33] In the case of Modjtaba Hosseinzadeh Majid v Public Prosecutor [2015] MLJU 502, the Court of Appeal had held at para (43): Knowledge that forms an integral part of possession can either be established through direct evidence or it can be reasonably inferred from the set of circumstances in a given case. Indeed in the case of Gunalan a// Ramachandran & Ors v PP [2004] 4 MLJ 489, it was said at page 506 therein by the Court that 'Knowledge is to be inferred from the facts and surrounding circumstances of a case.' [34] We did not find any error on the part of the learned judge on the above said findings. In our judgment, the learned judge was right in calling upon the accused to enter his defence on the charges against him. We are satisfied that the learned trial judge was right in holding that a prima facie case of trafficking in dangerous drugs in respect of the first charge and possession of dangerous drugs in respect of the second charge had been made out against the accused. [35] It is settled law that an appellate court will not interfere with a trial judge's findings of fact based on the trial judge's assessment on the credibility and veracity of witnesses at trial, unless the findings are clearly unsupported or against the weight of evidence. Discrepancies will always be there in evidence of a witness but what a judge has to determine is whether the discrepancies are minor or material. In the final analysis it is for the trial judge to determine which part of the evidence of a witness he is to accept and which one to reject. A heavy burden is imposed on an appellant who wishes to set aside finding of facts by the trial judge (see Tay Kheng Hong v Heap Moh Steamship Co. Ltd. [1964] MLJ 87; Dato' Mokhtar bin Hashim & Anor v Public Prosecutor [1983] 1 MLJ 84 (FC); Che Omar bin Mohd Akhir v Public Prosecutor [1999] 2 MLJ 689 (CA); Lai Kim Hon & Ors v Public Prosecutor [1981] 1 MLJ 84 (FC); Herchun Singh & Ors v Public Prosecutor [1969] 2 MLJ 209)). On the evidence before the learned trial judge, it cannot be said that His Lordship's findings were against the weight of evidence. [36] We turn next to the third ground of appeal raised by the learned counsel for the accused that the learned judge erred in convicting the accused by imposing a higher burden on the accused which had caused a failure of justice. Learned counsel for the accused also contended that the trial judge failed to give a judicial appreciation to the defence's case. It was contended too that the trial judge had erred when he held that the accused's defence has failed to raise a reasonable doubt on the prosecution's case. [37] His Lordship at the end of the prosecution's case (p. 55 Appeal Record Volume1) had stated as follows: "77. In a criminal trial the onus of proving the guilt of an accused person beyond reasonable doubt, which never shifts, lies throughout on the prosecution. It is not upon the accused to prove his innocence. The burden on him is merely to offer an explanation which may reasonably be true or which raises a reasonable doubt as to his guilt: see Saminathan & Ors v Public Prosecutor [1955] 21 MLJ 121; Public Prosecutor v Datuk Haji Harun bin Haji Idris & Ors [1977] 1 MLJ 180. In considering the defence the court is guided by the principles set out in the case of Mat v Public Prosecutor [1963] 1 MLJ 263 and in the case of Mohamad Radhi bin Yaakob v PP [1991] 3 CLJ 2013. I also refer to s.182A of CPC." [38] At the end of the defence's case, His Lordship at pp. 72 to 73 of the Appeal Record Volume 1, concluded as follows: "113. At the close of the defence case, the court has to decide whether the defence has raised any reasonable doubt on the prosecution's case. On the evidence adduced, the defence has failed to raise any doubt on the prosecution's case that the accused was in possession of the drugs and nature of the drugs in the Avanza and in the storeroom. The defence has also failed to raise any doubt that the accused was in possession of the metal grinder, digital scale and two pen knives found in the ground floor room." [39] On perusal of the Appeal Record, we noted that the learned trial judge had extensively dealt with the defence case and made his finding as stated at pp. 70 to 72 Appeal Record Volume 1. His Lordship alluded to the evidence of each of the defence witnesses, namely DW2, DW3, DW4 and DW5. His Lordship found that the defence of the accused was a mere denial and insufficient to cast a reasonable doubt on the prosecution's case. In dealing with the defence's case, the learned trial judge said as follows: