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