Pfd Company has debt with a yield to maturity of 6.5%, a cost of equity of 14.3%, and a cost of preferred stock of 9.7%. The market values of its debt, preferred stock, and equity are $10.5

million, $3.5 million, and $16.5 million, respectively, and its tax rate is 21%. What is this firm's after-tax WACC?Note: Assume that the firm will always be able to utilize its full interest tax shield.