In the macroeconomic model of the open economy developed in the text, if the central bank increases the money supply, the price level will:

Select one:

a. rise, the real interest rate will rise, the nominal interest rate will rise, the real exchange rate will rise and the nominal exchange rate will rise

b. rise, the real interest rate will be unaffected, the nominal interest rate will rise, the real exchange rate will be unaffected and the nominal exchange rate will rise

c. rise, the real interest rate will be unaffected, the nominal interest rate will be unaffected, the real exchange rate will be unaffected and the nominal exchange rate will be unaffected

d. rise, the real interest rate will be unaffected, the nominal interest rate will rise, the real exchange rate will be unaffected and the nominal exchange rate will fall