Which of the following statements are correct in relation to M & M Proposition II with no taxes? 1. The required return on assets is equal to the weighted average cost of capital. II. The cost of equity is equivalent to the required rate of return on assets. III. The cost of equity is inversely related to the debt-equity ratio. IV. The cost of equity increase when the amount of leverage used by a firm rises. O I and IV only O I, II, III, and IV O I, II, and IV only II and IV only O I and II only