An Investor Purchases One Municipal and One Corporate Bond That

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 20% marginal tax bracket, his or her after-tax rates of return on the municipal and corporate bonds would be ________ and ______, respectively.

A) 8% and 10%
B) 8% and 8%
C) 6.4% and 8%
D) 6.4% and 10%
E) 10% and 10%