Avicorp has a $13.8 million debt issue outstanding, with a 6.1% coupon rate. The debt has semi-annual coupons, the next coupon is due in six months, and the debt matures in five years. It is currently priced at 93% of par value. a. What is Avicorp's pre-tax cost of debt? b. If Avicorp faces a 40% tax rate. What is its after-tax cost of debt? a. The pre-tax cost of debt is % per year. b. If Avicorp faces a 40% tax rate, the after-tax cost of debt is %