After analyzing data of 1,000 stocks, you discover that you can make greater than normal returns by buying shares of stocks in firms that attained the highest retum in the most recent three month. O a. O c. This is a violation of all forms of market efficiency O b. This is not a violation of market efficiency. This is a violation of strong-form efficiency. O d. This is a violation of weak form inefficiency. O e. This is a violation of semi-strong form efficiency