NO.PZ2016021705000015
问题如下：
With regard to the net present value (NPV) profiles of two projects, the crossover rate is best described as the discount rate at which:
选项：
A. two projects have the same NPV.
B. two projects have the same internal rate of return.
C. a project’s NPV changes from positive to negative.
解释：
A is correct.
The crossover rate is the discount rate at which the NPV profiles for two projects cross; it is the only point where the NPVs of the projects are the same.
这里的NPV就是指不折现项下的？
