NO.PZ2023021601000028
问题如下：
Which of the following is least likely an assumption of the capital asset pricing model (CAPM)?选项：
A.Security prices are not affected by investor trades. (2016 mock) B.An investor can invest as much as he or she desires in any asset. C.Investors are different only with respect to their unique holding periods.解释：
One of the assumptions of the CAPM is that investors plan for the same single holding period.b为什么不选呢
