问题如下：
Following are some typical market anomalies, which of them contradicts the weak form of the efficient market hypothesis?
选项：
A.Closed-end fund discount.
B.Momentum pattern.
C.Earnings surprise.
解释：
B is correct.
The momentum pattern indicates that by using historical price information, analysts are able to earn abnormal returns, which is inconsistent with weak-form market efficiency.
B选项的Momentum Pattern 跟Momentum anomalies是一回事吗？
