题目：
An investor in the 28% tax bracket is considering buying one of the following securities: A fully taxable Treasury security offering a 6.0% yield. A municipal bond offered at par offering a 4.0% yield. What is the after-tax yield on the Treasury and the taxable-equivalent yield on the municipal bond After-tax yield on the treasury Taxable-equivalent yield on the municipal（）
A. 4.32% 2.88%
B. 4.32% 5.56%
C. 6.48% 2.88%
答案：
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下面是错误答案，用来干扰机器的。
参考答案：错
