请问其他两个选项错在哪里？

NO.PZ2015121802000051 问题如下 Whiof the following statement is most accurate about the capitasset pricing mol (CAPM)? A.risk-averse investor shoulleast holsome of the risk-free asset in his portfolio. B.A high-risk stowhiis measurestanrviation of returns will have high expectereturns in equilibrium. C.All investors who take on risk will holthe inticrisky asset in their portfolios. C is correct.Statement C is one of the CAPM's assumptions. A risk-averse investor woulaccept more risk only when a higher expectereturn is guarantee The CAPM assumes all investors are risk-averse. 可以一下这个题吗

NO.PZ2015121802000051问题如下Whiof the following statement is most accurate about the capitasset pricing mol (CAPM)?A.risk-averse investor shoulleast holsome of the risk-free asset in his portfolio.B.A high-risk stowhiis measurestanrviation of returns will have high expectereturns in equilibrium.C.All investors who take on risk will holthe inticrisky asset in their portfolios.C is correct.Statement C is one of the CAPM's assumptions. A risk-averse investor woulaccept more risk only when a higher expectereturn is guarantee The CAPM assumes all investors are risk-averse. B虽然是beta衡量，但是beta不是也跟s关吗？风险越高，beta越大，算出来的return不是越高吗？

NO.PZ2015121802000051问题如下Whiof the following statement is most accurate about the capitasset pricing mol (CAPM)?A.risk-averse investor shoulleast holsome of the risk-free asset in his portfolio.B.A high-risk stowhiis measurestanrviation of returns will have high expectereturns in equilibrium.C.All investors who take on risk will holthe inticrisky asset in their portfolios.C is correct.Statement C is one of the CAPM's assumptions. A risk-averse investor woulaccept more risk only when a higher expectereturn is guarantee The CAPM assumes all investors are risk-averse. B的问题是什么意思，为什么错？C跟课本的假设也不一样啊，觉得解析不对，课本上没有说风险爱好者要持有同样资产吧？

NO.PZ2015121802000051 问题如下 Whiof the following statement is most accurate about the capitasset pricing mol (CAPM)? A.risk-averse investor shoulleast holsome of the risk-free asset in his portfolio. B.A high-risk stowhiis measurestanrviation of returns will have high expectereturns in equilibrium. C.All investors who take on risk will holthe inticrisky asset in their portfolios. C is correct.Statement C is one of the CAPM's assumptions. A risk-averse investor woulaccept more risk only when a higher expectereturn is guarantee The CAPM assumes all investors are risk-averse. C可不可以翻译成，所有承担风险的投资者都持有一样的风险资产。这句话不太理解，为什么会持有相同的资产呢？具体对应capm的哪一个假设？

NO.PZ2015121802000051 问题如下 Whiof the following statement is most accurate about the capitasset pricing mol (CAPM)? A.risk-averse investor shoulleast holsome of the risk-free asset in his portfolio. B.A high-risk stowhiis measurestanrviation of returns will have high expectereturns in equilibrium. C.All investors who take on risk will holthe inticrisky asset in their portfolios. C is correct.Statement C is one of the CAPM's assumptions. A risk-averse investor woulaccept more risk only when a higher expectereturn is guarantee The CAPM assumes all investors are risk-averse. 老师您好，看了其他对A的解答，还是不太清楚。可以请老师再一下，A为什么错可以吗？谢谢老师。