8. Keys Printing plans to issue a $1,000 par value, 20-year noncallable bond with an 8.00% annual coupon, paid semiannually. The company's marginal tax rate is 40.00%, but Congress is considering a change in the corporate tax rate to 30.00%. By how much would the component cost of debt used to calculate the WACC change if the new tax rate was adopted? *

A. 0.57%

B. 0.63%

C. 0.70%

D. 0.77%

E. 0.80%