The outstanding bonds of Tech Express are priced at $989 and mature in 8 years. These bonds have a 6 percent coupon and pay interest annually. The firm's tax rate is 39 percent. What is the firm's after-tax cost of debt?
A. 3.01 percent
B. 3.22 percent
C. 3.35 percent
D. 3.77 percent
E. 4.41 percent