【单选题】Suppose a country abandons a no-trade policy in favor of a free-trade policy. If, as a result, the domestic price of pistachios decreases to equal the world price of pistachios, then
A.
that country becomes an importer of pistachios.
B.
that country has a comparative advantage in producing pistachios.
C.
at the world price, the quantity of pistachios supplied in that country exceeds the quantity of pistachios demanded in that country.