The Economic and Monetary Union of the European Union (EMU), a subset of the countries of the European Union which utilize the same currency (the Euro), is expected to experience an increase in aggregate real income in 2021, but no change in the price level or money supply. As a result of this increase in aggregate real income, the LM curve of the EMU economy

a. will become flatter.

b. will become steeper.

c. will not be affected.

d. may become flatter or steeper.