Which of the following statements is the most accurate? Select one 3. Efficient markets as a notion means that , at any point in time, volatility of assets fully reflect all available information O b. CAPM states that markets are efficient most of the time but could be efficient sometimes c. Perfect information and investors' rationality imply that markets are inefficient Od. Inefficiency of financial markets means that there exist profit opportunities that can be exploited by investors O e Financial markets are always efficient because investors can always obtain information from big banks