Which of the following statements are FALSE? I. If the stock market is at least semi-strong efficient then, you cannot expect to find underpriced or overpriced stocks even if you have inside information. II. The statement that stock prices follow a random walk implies that successive price changes are dependent of each other. false III. In a semi-strong efficient market, an insider or corporate officer may outperform the market by trading on the inside information. IV. If markets are efficient in the weak form, then it is possible to make consistently superior profits by using trading rules based on past returns. a. I and II only| b. II and IV only c. I, II and IV only d. I, II, III and IV