问题如下:
Compared with the portfolios on the CML, which of the following statements about the portfolio above the CML is correct?
选项:
A. The portfolio above the CML is considered inferior.
B. The portfolio above the CML is considered inefficient.
C. The portfolio above the CML is considered unachievable.
解释:
C is correct.
Any portfolio that plots above the CML is unachievable, and any portfolio that plots below the CML is inferior to any point on the CML.
他是和有效前沿的连接点,那不是在上面的话,不在有效前沿上、应该是无效的啊,为什么选项2,无效不对?