4

D Question 4 1 pts Neptune Corporation's bonds have 15 years to maturity and a coupon rate of 9%. Interest is paid semi-annually. The bonds sold at par value, but the firm paid flotation costs amounting to 4% of par value. The firm has a marginal tax rate of 21%. What is the firm's after-tax cost of debt for these bonds? 7.51% 09.0% 6.79% 5.68% O 9.51%