问题如下：
What will an investor get when using the standard fundmental analysis to make investments in a semi-strong efficient market?
选项：
A.He may get positive abnormal trading profits.
B.He may get zero abnormal trading profits.
C.He may get negative abnormal trading profits.
解释：
B is correct.
The semi-strong form of market efficiency says that all available public information is reflected in current prices. Thus, standard fundamental analysis will yield no abnormal trading profits.
基本分析在半强有效的市场是徒劳的，基本面分析不是属于主动投资，算上交易成本不是应该获得低于被动投资的收益？C选项为啥不对？
