问题如下：
According to the capital asset pricing model, what is the relationship between the market risk premium and the excess market return?
选项：
A.Market risk premium is less than the excess market return.
B.Market risk premium equals to the excess market return.
C.Market risk premium is higher than the excess market return.
解释：
B is correct.
With regard to the capital asset pricing model, the market risk premium equals to the market return minus the risk-free rate, i.e. the the return in excess of the market return.
老师问下这道题 为什么不选A 感觉market risk premium还要乘上beta 才能算是excess return beta通常小于1
