7. In the southern zone, this Act does not apply except:
(a) in any land classified as Category I or II land;
(b) in the Cree traplines, where the Crees have the exclusive trapping rights provided for in paragraph e of section 18 and where only Cree tallymen, their families as defined in section 19 and the Crees and Inuit authorized by those tallymen have the right to harvest;
(c) in the Cree traplines referred to in paragraph b, where the persons referred to in that paragraph have the exclusive right to hunt for commercial purposes.