137. Principal liable for acts of servant or agent

Where the servant or agent of a person commits an offence or does anything or omits to do anything which if done or omitted to be done by that person would constitute an offence under this Act, that person shall, notwithstanding that he has no knowledge of the offence, be deemed to be guilty of the offence and shall be liable to punishment for the offence unless he proves that—

the act or omission complained of was not within the ordinary scope of the employment of the servant or of the agency of the agent; or

the act or omission complained of was done or omitted to be done without his consent or connivance and that he exercised all such diligence to prevent the commission or omission as he ought to have exercised having regard to all the circumstances of the case.