All of the Following Are Endogenous Variables in the Dynamic $\pi _ { \mathrm { t } } ^ { \mathrm { * } }$

Multiple Choice

All of the following are endogenous variables in the dynamic model of aggregate demand and aggregate supply except:

A) Y_t, output
B) $\pi _ { \mathrm { t } } ^ { \mathrm { * } }$ central bank's inflation target
C) r_t, real interest rate
D) E_t $\pi$ _{t + 1}, expected inflation