The institutions that make up the banking system are ______.
a. thrift institutions, the chicago mercantile exchange, commercial banks, and the new york stock exchange
b. thrift institutions, the u.s. treasury, the federal reserve, and money market funds
c. thrift institutions, the federal reserve, money market funds, and commercial banks
d. the world gold market, the u.s. treasury, the chicago mercantile exchange, and the new york stock exchange
e. the world gold market, the federal reserve, the chicago mercantile exchange, and commercial banks