Avicorp has a $ 13.2 million debt issue outstanding, with a 6.2 % coupon rate. the debt has semiannual 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 cost of debt? note: compute the effective annual return. b. if avicorp faces a 40 % tax rate, what is its after-tax cost of debt? note: assume that the firm will always be able to utilize its full interest tax shield.