问题如下：
Megan, a student learning corporate finance this year, wrote down something about NPV and IRR on her notebook.
Statement 1: The IRR is the discount rate that makes the project's present value of cash inflows equal to the present value of cash outflows.
Statement 2: Analyst should use the IRRs to select the project, if the IRR method gives a different ranking result from the NPV method.
Statement 3: The NPV indicates the expected change in the value of the firm.
Statement 4: If IRR> the required rate of return, accept the project.
Which of Megan's statements are correct?
选项：
A.Statement 1, 3
B.Statement 1, 3, 4
C.Statement 2, 4
解释：
B is correct.
Statement 2 is incorrect, because the NPV method should be selected if NPV and IRR give conflicting decisions. Statement 1,3,4 are all correct.
前面才遇到一道题，和 statement 4一样的描述，我选了结果错了，解释是IRR满足条件后要再判断下NPV，这一题又要求选上这个选项，考试遇到类似的多选题到底选不选呢
