Answer:
a. U.S Treasury bills.
b. Commercial paper.
c. Money market mutual funds.
Step-by-step explanation:
A Treasury Bill can be regarded as short-term debt obligation of U.S. government, This is is usually fully supported by Treasury Department, it's maturity is within one year or one year. T- billls is usually offer for sold at
$1,000, and can reach as high as $5 million.
Commercial paper can be regarded as
money-market security which is usually issued by large corporations so that funds can be obtained to cater for
short-term debt obligations that arises.
money market fund can be regarded as open-ended mutual fund which is been invested on short-term debt securities. This debt securities could be
US Treasury bills as well as commercial paper.