Studies from which form(s) of the efficient market hypothesis (EMH) provide evidence that security prices adjust so quickly to a public announcement that it is not possible for investors to realize significant abnormal returns after a public announcement has been made()

A. semip-form of the EMH.

B. weak-form of the EMH

C. p-form of the EMH

滚动轴承如果油脂过满，会（）。