Any Two Individuals Will Gain from Exchange

Multiple Choice

Any two individuals will gain from exchange

A) unless one has an absolute advantage in producing all goods.
B) if each specializes in the production of the good for which he has the higher opportunity cost.
C) unless they have the same opportunity costs for producing all goods.
D) unless they have different opportunity costs for producing all goods.
E) unless they have the same absolute advantage in producing all goods.