NO.PZ2016021706000035
问题如下：
Considering the following statements about capital strcture and leverage, which is least accurate?
选项：
A.Operating leverage decreases when the proportion of firm's total costs in fixed costs decreases.
B.Capital structure decisions are affected by the corporate tax rate
C.Operating leverage increases with the corporate tax rate.
解释：
C is correct.
Operating leverage decreases when fixed costs account for a smaller percentage of total costs.
The lower the tax rate, the higher the after-tax cost of debt. Thus it may influence the capital structure.
Operating leverage is not affected by the corporate tax rate.
我知道这题问的是DOL，因为它涉及到的是Sales和EBIT,肯定不受税率影响。
但我对税率是否会影响DFL有些犹疑？
