The outstanding bonds of Tech Express are priced at 105.4 percent of face value and mature in 10 years. These bonds have a face value of $1,000, a coupon rate of 8.5 percent, and pay interest semiannually. The tax rate is 21 percent. What is the aftertax cost of debt? 6.88% 6.10% 5.26% 5.85% 5.03%