10. If the Federal Reserve were to buy U.S. dollars for its vaultholdings by selling Japanese yen to commercial banks from itsvault, the result would be to _____ the supply of U.S. dollars and_____ the exchange rate in terms of the number of yen per U.S.dollar.

           A) Increase, lower                             B)        cause no change in,raise

           C) Decrease, lower                           D)        cause no change in,lower