问题如下：
Matt, CFA, is investigating the capital structure of Company M, a manufacturer of automobile. The company is in the 25% tax bracket. He has collected the relevant financial information in the following table. What`s the cost of equity for Company M?
选项：
A. 10.31%
B. 10.94%
C. 11.25%
解释：
B is correct.
考点：Capital Structure Theory: with tax
解析：根据公式re = r0 + (r0 − rd) * (1 − t) * D/E
= 10% + (10% − 7.5%) * (1 – 25%) * (50/100) = 10.9375%
请问mm理论的with tax 情况能否推倒一下，直接记公示容易忘
