Which of the Following Is a Problem for Monetary Policy

Multiple Choice

Which of the following is a problem for monetary policy in a currency union?

A) Monetary policy will affect the economy with a longer lag than would be the case without the currency union.
B) A "one size fits all" monetary policy may lead to interest rates being too high for some economies in the union, while being too low for others.
C) Money supply is more difficult to control in a currency union than in an individual country.
D) There is more than one central bank.