10 poin QUESTION 4 Which of the following statements are correct? I. The SML approach is dependent upon a reliable measure of a firm's unsystematic risk. Il. The SML approach can be applied to firms that retain all of their earnings. Ill. The SML approach assumes a firm's future risks are similar to its past risks. IV. The SML approach assumes the reward-to-risk ratio is constant. O1.1, II, and Ill only 2, II, II, and IV only O3.I and Ilil only 4.1l and IV only O 5II and IV only