If Real Incomes in Foreign Nations Were Growing Less Rapidly

If real incomes in foreign nations were growing less rapidly than U.S. real incomes, one would expect that as a result,

A) ​the exchange value of the dollar would decline relative to other currencies.
B) ​the exchange value of the dollar would increase relative to other currencies.
C) ​there would likely be no effect on the exchange value of the dollar relative to other currencies.
D) ​there would be an indeterminate effect on the exchange value of the dollar relative to other currencies.