【单选题】听力原文:America's Central Bank is part of a larger financial system called the United States Federal Reserve System. It is not a single bank, but a banking system with operations that are both public and...
A.
Controlling the flow of money in the economy.
B.
Overseeing the activities of banks.
C.
Producing and distributing bank notes and coins.
D.
Contributing to the maintenance of a stable financial system.