In each of the following scenarios, identify the risk associated with the bond. (a) You buy a bond for 10 years at an annual real rate of return of 4.5%, but several years later, market interest rates on other bonds rise. (b) You buy a five-year bond at an annual interest rate of 2.9%, but have to cash it suddenly to pay for an unexpected surgery, and get a low price for the bond. (c) You buy a bond from a new company that fails after two years, and you lose your investment. (d) You buy a bond at a 3% annual rate of return for four years, but after two years, comparable new bonds have rates of 4.5%.