(3) Any
defence that is applicable to proceedings for an offence in respect of a
contravention of another provision of this Act or of the regulations also
applies to proceedings for an offence against this section in respect of the
same contravention.
(4) A person may be found guilty of an offence against
this section in relation to a contravention of another provision of this Act
whether or not the person has been found guilty of an offence against another
provision of this Act in relation to that contravention.