A taxable bond has a yield of 6 percent, and a municipal bond has a yield of 4 percent. If you are in the 30% tax bracket, the after-tax yield on the corporate bond would be _____ while the after-tax yield on the municipal bond would be _____.

A) 4.2%; 2.8%

B) 8.57%; 5.71%

C) 4.2%; 4.0%

D) 6.0%; 2.8%