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 something relatively more efficiently than another.
B) may be able to produce something at a lower opportunity cost than another.
C) may be able to produce something more cheaply than another.
D) with an absolute advantage in producing two different goods may have a larger absolute advantage in producing one of those goods than in producing the other.
E) all of the above are true.