正确步骤是什么

NO.PZ2018122701000011 问题如下 Jane is a risk analyst who currently collects the portfolio's 1,000 historicreturn stributions, but after a preliminary analysis she founthe ta appeareskewe so she cito use bootstrapping historicsimulation to estimate a 5% VaR. Whiof the following statements is one of the steps in this metho A.Weighting returns relative volatility B.Repeating sampling with replacement to create a large number of samples. C.Removing outliers from the originsample Choosing appropriate ratio of consecutive weights B is correct. 考点 Bootstrapping 解析 A为volatility-weighte的步骤；age-weighte；C是凑的。B，重新抽样并且替换，以此获得大量样本，是Bootstrapping的操作步骤之一。 老师这里的B描述有放回的抽样用的是replacement，那不是表示抽出的样本之后，再用新的数据替换进样本库中吗？还是我想多了？