问题
单项选择题
The underlying cause of ranking conflicts between the net present value (NPV) and internal rate of return (IRR) methods is the underlying assumption related to the:（）
A. initial cost.
B. reinvestment rate.
C. cash flow timing.
答案
参考答案：B
解析：
The IRR method assumes all future cash flows can be reinvested at the IRR. This may not be feasible because the IRR is not based on market rates. The NPV method uses the weighted average cost of capital (WACC) as the appropriate discount rate.