The Banking System Has $20 Million in Reserves and Has

Multiple Choice

The banking system has $20 million in reserves and has a reserve requirement of 20 percent. Bankers previously did not hold any excess reserves, but difficult economic times make them decide that it is prudent to hold 25 percent of deposits as reserves. Other things equal, by how much must the Bank of Canada increase bank reserves to keep the money supply the same?

A) $4 million
B) $5 million
C) $20 million
D) No action by the Bank of Canada is necessary.