Suppose Canada Produces Only Two Goods,corn and Automobiles

Suppose Canada produces only two goods,corn and automobiles.If Canada has a comparative advantage in automobiles,a move toward free trade will

A) harm automobile workers, benefit corn workers, but benefit the nation as a whole.
B) harm automobile workers, harm corn workers, but benefit the nation as a whole.
C) benefit automobile workers, harm corn workers, but harm the nation as a whole.
D) benefit automobile workers, harm corn workers, but benefit the nation as a whole.