问题
单项选择题
An investor is considering the purchase of two bonds. One of the bonds is tax-exempt and yields 4.5% while the other bond is taxable and yield 6.0%. If the two bonds are alike in all other characteristics, the rate that would make the investor indifferent between the two bonds is closest to:（）
A. 9.0%.
B. 25.0%.
C. 27.0%.
答案
参考答案：B
解析：
The indifference point would be the rate satisfies the equation: 6.0%×(1-T)=4.5%. solving for T, the marginal tax rate =25%.