Consider a corporate bond with a yield of 6.8% and a municipal bond (with equivalent risk) with a 4.9% yield. Which of the following statements is most accurate?

A.An investor with a marginal tax rate of 40% prefers the corporate bond.

B.An investor with a marginal tax rate of 15% prefers the municipal bond.

C.An investor with a marginal tax rate of 28% is indifferent between the two bonds.