Why Might a Business Choose to Incorporate Federally Instead of Provincially

Why might a business choose to incorporate federally instead of provincially?

A) Provincial corporations can carry on business in only one province at a time.
B) It is generally cheaper to register as a federal corporation if carrying on business in more than two provinces.
C) It is more expensive to incorporate a provincial corporation than a federal corporation.
D) Unlike provincial corporation,federal incorporation allows a business to conduct international operations.