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Consider the following statements. I. The changes in the stock price of Bank of Montreal are predictable. II. The correlation between the monthly returns on Barrick Gold stock for two consecutive months is 0.5. III. The stock price of Manulife increases even when no new information on the company is released to the public. Which of the above statements are inconsistent with a random walk model of stock prices? a. I and II. b. None of the statements. c. II and III. d. I and III. e. I, II and