Discuss and provide an example of each of the following to discuss.

a. What are two sources of return when it comes to a fixed income security and provide a real example.

b. What is the concept of duration and maturity risk on a bond along with a real example?

c. Discuss the sensitivity of bonds to interests, and yields. Provide an example.

d. What is one example of credit and liquidity risk to a bond and provide an example.