Please answer the following question: You know the following information about USF Inc. They have 30,000 bond outstanding with 20 years to maturity. USF Inc has a credit rating of AA by S&P and it is expected that any new debt issued by firms with a AA rating would have a 4.2% cost of debt. The bonds currently sale for 99 percent of par. USF has 450,000 shares outstanding with a current stock price of $105 per share. The firm has a beta of 1.2 and their dividend is next expected to be 3.55 with a constant growth rate of 5%. Finally, the 30,000 shares of 4.3% preferred stock outstanding with a $100 par value and a current market price of $64.00. Treasury bills current rate is 4.1 percent and the firm's marginal tax rate is 35%. What is the firm's WACC