As the differences in opportunity costs between the U.S. and its trading partners increase, the potential gains from specialization and trade __. – 极搜搜

As the differences in opportunity costs between the U.S. and its trading partners increase, the potential gains from specialization and trade __.

As the differences in opportunity costs between the U.S. and its trading partners increase, the potential gains from specialization and trade __.

A.become unpredictable

B.decrease

C.stay the same

D.increase

正确答案：increase