Calculate the after-tax return of a 13.72 percent, 20-year, A-rated corporate bond for an investor in the 10 percent marginal tax bracket. Compare this yield to a 9.67 percent, 20 year, A-rated, tax-exempt municipal bond, and explain which alternative is better. Repeat the calculations and comparison for an investor in the 33 percent marginal tax bracket The stor tax return of a 13.72 percent, 20 year. Arated corporate bond for an investor in the 10 percent marginal tox bracket is % (Round to two decimal places) Compare this yold to a 0.67 percent, 20 your, A-rated, tax-exempt municipal bond and explain which alternative is better (Select the best answer below) OA. The after tax yield of 12.35 percent for the corporato bond is a better alternative than the 9.67 percent tox tree municipal bond at the 10 percent tax rato, OB. The 9.67 percent tax free municipal bond is a better alterative than the after tax yield of 12.35 percent for the corporate bond at the 10 percent tax rate. The after-tax return of a 13 72 percent, 20-year, A-rated corporate bond tor an investor in the 33 percent marginal tax brackets (Round to wo decimal places.) Repeat the calculations and comparison for an investor in the 33 percent marginal tax bracket (Select the best answer below) O A. The 967 percent tax free municipal bond is a better alternative than the after tax yield of 9.19 percent for the corporate bond at the 33 percent tax rate. OB. The after tax yield of 9.19 percent for the corporate bond is a better alternative than the 9.67 percent tax free municipal bond at the 33 percent tax rate