To help finance a major expansion, Castro Chemical Company sold a noncallable bond several years ago that now has 15 years to maturity. This bond has a 8.5% 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 . Group of answer choices 4.69% 4.92% 5.39% 4.09% 5.93%