Which of the following statements is/are true? The firm's cost of equity is unaffected by changes to a firm's capital structure. For a firm that initially has no debt in its capital structure, the WACC initially decreases but eventually starts to increase as the weight of debt increases. A firm's weighted average cost of capital will always decrease as more debt is added to its capital structure. More than one of the above are true. None of the above are true. Which of the following is/are always true about a firm's before-tax cost of debt? It is equal to the yield to maturity on the firm's outstanding bonds. It is greater than the cost of equity for that firm. It is greater than the coupon rate on the firm's outstanding debt. It is equal to the coupon rate on the firm's outstanding bonds. O More than one of the above is true. The slope of the security market line (SML) is the market risk premium the risk-free interest rate O the beta coefficient the required return on the market portfolio None of the above