The "J curve" effect describes:

A. the continuous longterm inverse relationship between a country's current account balance and the country's growth in gross national product

B. the shortrun tendency for a country's balance of trade to deteriorate even while its currency is depreciating

C. the tendency for exporters to initially reduce the price of goods when their own currency appreciates

D. the reaction of a country's currency to initially depreciate after the country's inflation rate declines