An Appreciation of the Exchange Value of the U

An appreciation of the exchange value of the U.S. dollar would:

A) ​increase the dollar prices of U.S.imports and the foreign cost of exports from the U.S.
B) ​decrease the dollar prices of U.S.imports and the foreign cost of exports from the U.S.
C) ​increase the dollar prices of U.S.imports, but decrease the foreign cost of exports from the U.S.
D) ​decrease the dollar prices of U.S.imports, but increase the foreign cost of exports from the U.S.