An investor purchases one municipal and one corporate bond that pay rates of return of 8% and 10% respectively. If the investor is in the 15% tax bracket, his after tax rates of return on the municipal and corporate bonds would be respectively:______.a. 6.4% and 8%.
b. 6.8% and 10%.
c. 8% and 8.5%.
d. 8% and 10%.