If Mexico can produce avocadoes at a lower opportunity cost than the​ U.S., then relative to the U.S. it means that:

A. the U.S. can not benefit by trading with Mexico.
B. the U.S. should impose tariffs on imported Mexican avocadoes to help U.S. farmers.
C. Mexico has an absolute advantage in producing avocadoes.
D. Mexico has a comparative advantage in producing avocadoes.