QUESTION 30 To help finance a major expansion, Castro Chemical Company sold a noncallable bond several years ago that now has 20 years to maturity. This bond has a 9.25% annual coupon, paid semiannually, sells at a price of $1.025, and has a par value of $1,000 If the firm's tax rate is 40%, what is the component cost of debt for use in the WACC calculation? Do not round your intermediate calculations. a. 4.69% b. 5.93% c. 5.39% d. 6.09% O e. 5.93%