Conducting Monetary Policy So That the FF Rate = $\pi$ + 05

Multiple Choice

Conducting monetary policy so that the FF rate = $\pi$ + 0.5( $\pi$ - 2) + 0.5 (GDP gap) , where the FF rate is the nominal federal funds interest rate, $\pi$ is the annual inflation rate, and GDP gap is the percentage shortfall of real GDP from its natural level, is an example of :

A) an active policy rule.
B) a passive policy rule.
C) discretionary policy.
D) an automatic stabilizer.