One of the Important Reasons Why Many Economists Prefer Monetary

One of the important reasons why many economists prefer monetary policy that uses discretion instead of rules is that it:

A) prevents the Federal Reserve from using excessive expansionary policy to pump up the economy.
B) does a better job at keeping inflation at the long-run target.
C) keeps the money supply steady over the long run.
D) allows monetary policy to be used more aggressively when major economic shocks occur.