It is a defence to a director of an entity charged with an offence under any of sections 36 to 39 if the director proves that—
(a) the directors of the entity took all reasonable and proper steps to ensure that the applicable requirement of this Act would be complied with; or
(b) he or she took all reasonable and proper steps to ensure that the directors of the entity complied with the applicable requirement; or
(c) in the circumstances he or she could not reasonably have been expected to take steps to ensure that the directors of the entity complied with the applicable requirement.