单选题 Assume an investor is in the 33% marginal tax bracket. He is considering the purchase of either a 8.2% corporation bond that is selling at par or a 5.6% tax-exempt municipal bond that is also selling at par. Given that the two bonds are comparable in all respects except their tax status, the investor should buy the:

A、 corporate bond, since its after-tax yield is higher.
B、 corporate bond, since it has the higher yield of 6. 3%.
C、 municipal bond, since its taxable-equivalent yield is higher.

【正确答案】 C

【答案解析】[解析] 方法1：