问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ2015121801000132 问题如下 In fining asset classes part of the strategic asset allocation cision, pairwise correlations within asset classes shoulgenerally be: A.equto correlations among asset classes. B.lower thcorrelations among asset classes. C.higher thcorrelations among asset classes. is correct.the reang states, \"asset class shoulcontain homogeneous assets… pairecorrelations of securities woulhigh within asset class, but shoullower versus securities in other asset classes.\" 没明白啥意思呢？能具体讲一下吗
NO.PZ2015121801000132 lower thcorrelations among asset classes. higher thcorrelations among asset classes. C is correct. the reang states, \"asset class shoulcontain homogeneous assets… pairecorrelations of securities woulhigh within asset class, but shoullower versus securities in other asset classes.\"这个知识点在讲义的什么地方
lower thcorrelations among asset classes. higher thcorrelations among asset classes. C is correct. the reang states, \"asset class shoulcontain homogeneous assets… pairecorrelations of securities woulhigh within asset class, but shoullower versus securities in other asset classes.\" 能不能理解为，资产类别包含更多的资产，类别内部两两资产数量太少，所以风险更高？
想问一下题目的意思和的意思，很绕没有看懂
