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. If buying stocks that in previous months have increased by more than 20% consistently yields negative abnormal returns, then this violates what form of

. If buying stocks that in previous months have increased by more than 20% consistently yields negative abnormal returns, then this violates what form of market efficiency?

a.

Weak-form market efficiency

b.

Semi-strong form market efficiency

c.

Strong form market efficiency

d.

Weak-strong form market efficiency

e.

This does not violate any of the above forms of market efficiency

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