According to the Keynesian model, a decline in the expected price leve

According to the Keynesian model, a decline in the expected price level

a. will increase the inflation rate a central bank must generate to achieve a target level of unemployment.
b. will decrease the inflation rate a central bank must generate to achieve a target level of unemployment.
c. will not affect the inflation rate a central bank must generate to achieve a target level of unemployment.
d. will not impact the effectiveness of monetary policy.

ANSWER

B