Empirical tests examine是啥

问题如下：

Which one of the following statements best describes the semi-strong form of market efficiency?

选项：

A.

Empirical tests examine the historical patterns in security prices

B.

Security prices reflect all publicly known and available information

C.

Semi-strong-form efficient markets are not necessarily weak-form efficient

解释：

In semi-strong-form efficient markets, security prices reflect all publicly available information