问题如下：
Wilson Flannery is concerned that this project has multiple IRRs.
How many discount rates produce a zero NPV for this project?
选项：
A. One, a discount rate of 0 percent.
B. Two, discount rates of 0 percent and 32 percent.
C. Two, discount rates of 0 percent and 62 percent.
解释：
C is correct.
Discount rates of 0 percent and approximately 61.8 percent both give a zero NPV.
这道题计算器如何计算，请老师列出步骤解释
