-The Figure Above Shows the Market for Bank Reserves in Futureland

-The figure above shows the market for bank reserves in Futureland. If the Bank of Futureland undertakes an open market purchase of government securities that changes the quantity of reserves by $100 billion, then the federal funds rate will _.

A) remain at 6 percent a year
B) fall to 4 percent a year
C) rise to 8 percent a year
D) None of the above answers is correct.