The Fed Seldom Exercises Its Power to Change the Legal

The Fed seldom exercises its power to change the legal reserve requirements because

A) it lacks the authority to do so without prior congressional approval.
B) such changes are limited to no more than one per year.
C) this policy tool has a minimal effect on bank reserves because the limits are quite low.
D) most commercial banks manage their reserves responsibly without the Fed's intervention.
E) it is a drastic way to change bank reserves compared to open market operations.