Galvatron Metals has a bond outstanding with a coupon rate of 6.6 percent and semiannual payments. The bond currently sells for $1,856 and matures in 22 years. The par value is $2,000 and the company's tax rate is 21 percent. What is the company's aftertax cost of debt?

Multiple Choice

3.63%

4.09%

5.74%

4.69%

3.39%