没理解。这题是什么知识点

NO.PZ202207040100001005 问题如下 The most cost efficient strategy to with she’s concerns following the equity market correction is a(n): A.rebalancing to poliweights selling bon anpurchasing equities. B.rebalancing replacing the highest-tracking-error manager with low-cost inx exchange-trafun (ETFs). C.overlusing equity inx futures. SolutionC is correct. The most cost efficient rebalancing strategy is to implement overlusing equity inx futures. This approacget the equity exposure up to least the guiline range without impacting the active managers. Equity inx futures will very likely have less tracking error ththe active managers. A is incorrect. Buying equities anselling bon will incur trang costs ansrupt the present active managers’ execution. This is not the most cost-effective solution comparewith a rivatives overlay.B is incorrect. The IPS es not allow for inx ETFs; it allows for only active managers anrivatives. 看到前面有老师回答“这个ETF是inx exchange-trafun，指数ETF。指数ETF就是被动跟踪market cap-weighteinx的基金，收益表现与market cap-weighteinx基本一致。”【这句话是否可以当做结论记忆，所有的ETF都是被动跟踪market cap-weighteinx的基金？】

NO.PZ202207040100001005 问题如下 The most cost efficient strategy to with she’s concerns following the equity market correction is a(n): A.rebalancing to poliweights selling bon anpurchasing equities. B.rebalancing replacing the highest-tracking-error manager with low-cost inx exchange-trafun (ETFs). C.overlusing equity inx futures. SolutionC is correct. The most cost efficient rebalancing strategy is to implement overlusing equity inx futures. This approacget the equity exposure up to least the guiline range without impacting the active managers. Equity inx futures will very likely have less tracking error ththe active managers. A is incorrect. Buying equities anselling bon will incur trang costs ansrupt the present active managers’ execution. This is not the most cost-effective solution comparewith a rivatives overlay.B is incorrect. The IPS es not allow for inx ETFs; it allows for only active managers anrivatives. 客户明确说了，要用factor - base并认为factor - basemarket cap-weighteinx更好。因此，不适合投资指数ETF（inx exchange-trafun ）这里factor - basemarket cap-weighteinx，和ETF的对应关系，在哪里有对照？

NO.PZ202207040100001005问题如下The most cost efficient strategy to with she’s concerns following the equity market correction is a(n):A.rebalancing to poliweights selling bon anpurchasing equities.B.rebalancing replacing the highest-tracking-error manager with low-cost inx exchange-trafun (ETFs).C.overlusing equity inx futures.SolutionC is correct. The most cost efficient rebalancing strategy is to implement overlusing equity inx futures. This approacget the equity exposure up to least the guiline range without impacting the active managers. Equity inx futures will very likely have less tracking error ththe active managers. A is incorrect. Buying equities anselling bon will incur trang costs ansrupt the present active managers’ execution. This is not the most cost-effective solution comparewith a rivatives overlay.B is incorrect. The IPS es not allow for inx ETFs; it allows for only active managers anrivatives.老师，题目哪儿说不能用etf 了，另外用衍生品的话，成本不高吗

NO.PZ202207040100001005 问题如下 The most cost efficient strategy to with she’s concerns following the equity market correction is a(n): A.rebalancing to poliweights selling bon anpurchasing equities. B.rebalancing replacing the highest-tracking-error manager with low-cost inx exchange-trafun (ETFs). C.overlusing equity inx futures. SolutionC is correct. The most cost efficient rebalancing strategy is to implement overlusing equity inx futures. This approacget the equity exposure up to least the guiline range without impacting the active managers. Equity inx futures will very likely have less tracking error ththe active managers. A is incorrect. Buying equities anselling bon will incur trang costs ansrupt the present active managers’ execution. This is not the most cost-effective solution comparewith a rivatives overlay.B is incorrect. The IPS es not allow for inx ETFs; it allows for only active managers anrivatives. 为什么一定要外包？