You are a financial analyst at Patterson Technology Corporation and have been asked by the chief financial officer to estimate the company's after-tax WACC using the following information about Patterson Technology: The company has 3.5 million ordinary shares outstanding, priced at $125 and with a beta of 1.16. The expected market risk premium is 5.5%, and T-bills are yielding 4.5%. There are 850,000 preferred shares outstanding with a par value of $100 and 7.5% dividend.The market price of the preferred shares is $110. The company has 180,000 of semiannual coupon bonds outstanding with $1,000 par value. The bonds are selling at 106% of par. The coupon rate is 6.5% p.a., yield to maturity is 5.3% p.a. and the corporate tax rate is 36%.

(a) What is the company's capital structure?

(b) What is the company's after-tax WACC?