In the United States, the money supply (M1) is comprised of:

A.  coins, paper currency, and checkable deposits.
B.  currency, checkable deposits, and Series E bonds.
C.  coins, paper currency, checkable deposits, and credit balances with brokers.
D.  paper currency, coins, gold certificates, and time deposits.

ANSWER

A.  coins, paper currency, and checkable deposits.