Klein Corp. can issue $1,000 par value bond that pays $90 per year in interest at a price of $980. The bond will have a 10-year life. The firm is in a 35% tax bracket. What is the after-tax cost of debt? (Note there may be few decimal difference resulted by different calculation methods.) A. 9.14% B. 6.06% C. 3.87% D. 9.32%