Pfd Company has debt with a yield to maturity of 8.3%, a cost of equity of 14.2%, and a cost of preferred stock of 8.7%. The market values of its debt, preferred stock, and equity are $13.5 million, $2.6 million, and $13.9 million, respectively, and its tax rate is 38%. What is this firm's WACC? Note: Assume that the firm will always be able to utilize its full interest tax shield