If There Are Only Two Nations, One Nation's Exports Are

Multiple Choice

If there are only two nations, one nation's exports are the
Other's imports; which of the following is identical for both
Nations?

A) only the equilibrium relative price of the first nation's exports
B) only the opportunity cost of the first nation's exports
C) neither the equilibrium relative price nor the opportunity cost of the first nation's exports
D) both the equilibrium relative price and the opportunity cost of the first nation's exports