问题如下图：
选项：
A. 
B. 
C. 
解释：
这个题什么意思？答案也没看懂
这个题考的是factor based被动投资和传统的被动投资的区别。
这个讲义上有专门的讲解的，你可以看一下。考点知道了，答案应该就能看懂了。
A，factor based就是只focus几个factor，希望可以获得超过market的return。就是alternative beta嘛。是正确的。
B，factor base认为有用被动的办法获得超过market的机会，所以相比传统被动投资，应该是认为市场相对不那么有效的
C，因为是momentum策略，股价涨了才买，不是股价跌了才买。方向说错了
李斯克 · 2019年02月24日
NO.PZ201809170400000301 问题如下 Comparewith broamarket-cweighting, the internationequity strategy suggesteMcMahon is most likely to: A.concentrate risk exposure. B.baseon the efficient market hypothesis. C.overweight stocks threcently experiencelarge pricreases. A is correct. Comparewith broamarket-cweighting, passive factor-basestrategies tento concentrate risk exposure, leaving investors vulnerable ring perio when the risk factor (e.g., momentum) is out of favor. 如题
NO.PZ201809170400000301 问题如下 Comparewith broamarket-cweighting, the internationequity strategy suggesteMcMahon is most likely to: A.concentrate risk exposure. B.baseon the efficient market hypothesis. C.overweight stocks threcently experiencelarge pricreases. A is correct. Comparewith broamarket-cweighting, passive factor-basestrategies tento concentrate risk exposure, leaving investors vulnerable ring perio when the risk factor (e.g., momentum) is out of favor. 没看懂这道题目是什么意思，可以详细讲解一下吗？
NO.PZ201809170400000301 问题如下 Comparewith broamarket-cweighting, the internationequity strategy suggesteMcMahon is most likely to: A.concentrate risk exposure. B.baseon the efficient market hypothesis. C.overweight stocks threcently experiencelarge pricreases. A is correct. Comparewith broamarket-cweighting, passive factor-basestrategies tento concentrate risk exposure, leaving investors vulnerable ring perio when the risk factor (e.g., momentum) is out of favor. 老师请问，C是哪种weighting metho特点？overweight stocks threcently experiencelarge pricreases.
NO.PZ201809170400000301问题如下 Comparewith broamarket-cweighting, the internationequity strategy suggesteMcMahon is most likely to: A.concentrate risk exposure.B.baseon the efficient market hypothesis.C.overweight stocks threcently experiencelarge pricreases. A is correct. Comparewith broamarket-cweighting, passive factor-basestrategies tento concentrate risk exposure, leaving investors vulnerable ring perio when the risk factor (e.g., momentum) is out of favor. Leaving investors vulnerable ring perio when the risk factor is out of favor.怎么理解
NO.PZ201809170400000301 请问可以介绍下什么是broamarket-cweighting？谢谢