问题如下:
Which of the following statement cannot explain the important properties of security market index?
选项:
A. It can reflect market sentiment.
B. It can be used as a benchmark of manager performance.
C. It can be used to accurately estimate the market changes of the next period.
解释:
Security market index can reflect market sentiment, and can be used as a benchmark of manager performance. However, market changes over the next period can not be accurately estimated.
麻烦解释一下?谢谢。