Rapid increases in the U.S. exports of goods and services will result in a(n) _ foreign currency and a(n) ___ the U.S. dollars in the foreign exchange market.

A.increase in the demand for; increase in the supply of

B.increase in the supply of; increase in the demand for

C.shortage of foreign currency; surplus of

D.decrease in the supply of; decrease in the demand for

正确答案：increase in the supply of; increase in the demand for