In a Given Year,the Value of U

In a given year,the value of U.S.foreign exchange transactions ________.

A) are roughly equal to the value of all U.S.export and import transactions
B) cannot be calculated using nominal exchange rates
C) are relatively small in comparison with the value of U.S.export and import transactions
D) are approximately 25 times greater than the value of U.S.export and import transactions