6. An investor purchases one municipal and one corporate bond that pay rates of return of 7.5% and 10.3%, respectively. If the investor is in the 25% marginal tax bracket, his or her after-tax rates of return on the municipal and corporate bonds would be and respectively, (2 Points) 7.5% and 10.396 7.5% and 7.7396 5.63% and 7.73% 5.63% and 10.3% 10% and 10%