Which of the following is true if a country specializes in producing the goods for which it has a comparative advantage and then trades?

A. Output increases, and everyone in the economy benefits.
B. Income is redistributed toward import-competing industries.
C. There are gainers and losers, but the country as a whole is better off.
D. Losers may outweigh the gainers, and a country may be worse off.

C. There are gainers and losers, but the country as a whole is better off.