NO.PZ2018070201000114
问题如下：
Listed are some securities with different characteristics, in order to maximize risk-adjusted returns, which one should a portfolio manager seek to invest less?
选项：
A.Securities with values of nonsystematic variance equal to 0.
B.Securities with lower values for nonsystematic variance.
C.Securities with higher values for nonsystematic variance.
解释：
C is correct.
Managers should give less weight for securities with greater nonsystematic risk in the portfolio if they want to maximize risk-adjusted returns
如果想要return大，那资产的风险也大。想要return大，必然要承担大的风险。有什么问题吗？
