问题如下：
A financial analyst at Buckco Ltd. wants to compute the company's weighted average cost of capital (WACC) using the dividend discount model. The analyst has gathered the following data:
Buckco’s WACC is closest to:
选项：
A.8 percent.
B.9 percent.
C.12 percent.
解释：
B is correct.
D/(D + E) = 0.8033 / 1.8033 = 0.445
WACC = [(0.445) (0.08)(1 − 0.4)] + [(0.555)(0.12)] = 8.8%
我算出来是12，然后呢？怎么变成9的
