Consider the following statements. Which is/are correct? I. The expected return of a portfolio of shares is the weighted average of the expected prices for each share II. When a dividend is announced, the share is trading ex-dividend of which the share price should fall by the announced amount of dividend III. In Australia, a capital gain realised from the sale of share within 12 months of purchase is taxed in full IV. To consider dividend received for personal taxation purpose, one should begin by grossing up the franked dividend received by the franking credit and then include in the assessable income. Select one: I IV I and II III and IV I, III, and IV II, III, and IV I, II, III, and IV None of the statements are correct