Galvatron Metals has a bond outstanding with a coupon rate of 5.9 percent and semiannual payments. The bond currently sells for $1,947 and matures in 21 years. The par value is $2,000 and the company's tax rate is 24 percent. What is the company's aftertax cost of debt?

3.06%

2.86%

4.93%

4.30%

4.66%