Which of the following would tend to contribute to a U.S. current account surplus?

A.The United States makes a unilateral tariff reduction on imported goods.

B.The United States cuts back on American military personnel stationed in Japan.

C.U.S. tourists travel in large numbers to Asia.

D.Russian vodka becomes increasingly popular in the United States.

正确答案：The United States cuts back on American military personnel stationed in Japan.