NO.PZ2023040301000092
问题如下：
Which of the following statements is most accurate in an efficient market?
选项：
A.
Securities market prices respond over time to changes in economic information
B.
Securities market prices fully reflect their fundamental values
C.
Active strategies will lead to excess risk adjusted portfolio returns
解释：
In an efficient market, market participants will process available information and those with opposite views will trade among each other until securities market prices fully reflect their fundamental values. An efficient market is thus a market in which asset prices reflect all past and present information.
麻烦助教解释下C选项是什么意思？