Which of the following would provide evidence against the semi-p form of the efficient market theory（）

A. Low P/E stocks tend to have positive abnormal returns over the long run.

B. Trend analysis is worthless in determining stock prices.

C. All investors have learned to exploit signals related to future performance.

目前老顶分类（）

A、来压不明显

B、来压明显

C、来压强烈

D、非常强烈