People Come to Expect the Exchange Rate for the Dollar

People come to expect the exchange rate for the dollar to rise from 90 yen per dollar to 111 yen per dollar in a month.As a result,

A) the supply curve of dollars shifts leftward.
B) the supply curve of dollars shifts rightward.
C) the demand curve for dollars shifts leftward.
D) there is a downward movement along the supply curve of dollars.