please help with this question

QUESTION 32 If a corporation has an average tax rate of 40 percent, the approximate annual, after tax cost of debt for a 10 year, 8 percent, $1,000 par value bond, selling at $1,100 is A. 10 percent. OB. 10.48 percent O C. 12.0 percent. OD. 6.29 percent. O E. None of the above