The answer is NOT 13.57. What is it? Please help.

Consider the following information for Watson Power Co.: Debt: Common stock: Preferred stock: 2,000 9 percent coupon bonds outstanding, $1,000 par value, 22 years to maturity, selling for 103 percent of par; the bonds make semiannual payments. 46,000 shares outstanding, selling for $55 per share; the beta is 1.12. 7,000 shares of 8.5 percent preferred stock outstanding, currently selling for $105 per share. 9.5 percent market risk premium and 8.5 percent risk-free rate. Market: Assume the company's tax rate is 35 percent. Find the WACC