Electronic Products has 22,500,000 bonds outstanding that are currently quoted at 101.60% of par. The bonds mature in 8 years, pay interest annually with 9.60% coupon rate, and have $1,000 face value. What is the firm's after-tax cost of debt if the applicable tax rate is 21.00%? 7.35% 5.75% 9.31% 5.87% 6.49%