Which of the following statements about market efficiency is MOST correct?

A.		An efficient market is one in which security prices fully reflect all relevant and available information about a security. Any deviations are quickly corrected.
B.		An efficient market is one in which security prices fully reflect all public and private information regarding that security. Overreactions are short lived.
C.		An efficient market is one in which security prices fully reflect all historical price and volume information regarding that security. The security's price reflects its intrinsic value.
D.		None of the above