The opportunity cost of producing a pair of pants in the USA is 5 bushels of wheat, while in China, it is 2 bushels of wheat. As a result: A. there can be mutual gains from trade to the two countries if the USA exports wheat to China in exchange for pants.
B. The USA has a comparative advantage over China in the production of pants.
C. China has a comparative advantage over the USA in the production of wheat.
D. there can be mutual gains from trade to the two countries if the USA exports pants to China in exchange for wheat.

Juanita and sam attend a beach party and notice that the local beach appears to have a great deal more trash washed up on shore than it did when they were young. the water doesn't appear nearly as clear, and there seems to be less evidence of small water creatures living in the shallows. an afternoon at the local library convinces them that one major cause is the new factory nearby. after some discussion, they decide their next step should be identifying the cause of the changes identifying the problem picketing the guilty factory lobbying their elected representatives to complain about the problem talking to a local environmental group about solutions