If the yield curve is downward sloping, which of the following statements is correct? (hint: graph the yield curves for a T-bond, a AAA bond, and a B bond)

a. The yield on the 10-year T-bond must exceed the yield on a 2-year T-bond.

b. The yield on the 10-year AAA corporate bond must be higher than the yield on the 5-year B corporate bond.

c. The yield on the 5-year T-bond must be smaller than the yield on the 5-year AAA corporate bond.

d. The yield on the 5-year T-bond must exceed the yield on the 10-year AAA corporate bond.

e. The yield on the 5-year AAA corporate bond must exceed the yield on 5-year B corporate bond.a