An investor purchases one municipal bond and one corporate bond that pay rates of return of 4.75% and 6.05%, respectively. If the investor is in the 25% tax bracket, his after-tax rates of return on the municipal and corporate bonds would be, respectively, _____.

4.75% and 6.05%

4.75% and 4.54%

4.54% and 4.75%

3.56% and 6.05%