If purchasing power parity holds, then if the price of a basket of goods in the U.S. rose from $1.000 to $1,200 and the price of the same basket in Poland rose from 6,400 Polish zloty to 8,000 zloty, then O a. the U.S. dollar would appreciate and the real exchange rate would stay the same. O b. the nominal exchange rate would be unchanged and the real exchange rate would appreciate. O c. the U.S. dollar would depreciate and the real exchange rate would be unchanged. O d. the nominal exchange rate would be unchanged and the real exchange rate would depreciate