In the Context of Financial Securities, Certificates of Deposit Are

In the context of financial securities, certificates of deposit are considered to be among the safest investment options because:

A) they are insured by the Federal Deposit Insurance Corporation.
B) they offer higher returns than most other types of investments.
C) the rate of interest paid on them is often higher than the interest rate on corporate bonds.
D) they can be cashed in before they mature without incurring any penalty.