问题如下：
A limitation of Monte Carlo simulation is:
选项：
A.its failure to do "what if" analysis.
B.that it requires historical records of returns
C.its inability to independently specify cause-and-effect relationships.
解释：
C is correct.
Monte Carlo simulation is a complement to analytical methods. Monte Carlo simulation provides statistical estimates and not exact results. Analytical methods, when available, provide more insight into cause-and-effect relationships
为什么是analytical method的补充，btw analytical methods是指什么/哪些methods？
