Viserion, Incorporated, is trying to determine its cost of debt. The firm has a debt issue outstanding with 26 years to maturity that is quoted at 95 percent of face value. The issue makes semiannual payments and has an embedded cost of 6 percent annually. What is the company's pretax cost of debt? O 6.40% O 7.68% 4.80% 07.04% 5.76% If the tax rate is 25 percent, what is the aftertax cost of debt? 0 4.80% 04.32% O 5.28% 0 6.72% 0 6.40%