The Idea Behind Comparative Advantage Reflects the Possibility That One

The idea behind comparative advantage reflects the possibility that one party:

A) may be able to produce everything relatively more efficiently than another party.
B) may be able to produce something at a lower dollar cost than another party.
C) with an absolute advantage in producing two different may export goods both of those goods to the other party.
D) may be able to produce something at a lower opportunity cost than another party.