The Nominal Exchange Rate Is

The nominal exchange rate is

A) a measure of the quantity of the nominal GDP of other countries that we get per unit of U.S. nominal GDP.
B) the real exchange rate multiplied by the ratio of the U.S. price level to the foreign price level.
C) the value of the U.S. dollar expressed in units of foreign currency per U.S. dollar.
D) the relative price of U.S. produced goods to foreign produced goods.