Problem 11-15 Comparison of the costs of debt and preferred stock (LO11- 3) 1.7 points The treasurer of Riley Coal Co. is asked to compute the cost of fixed income securities for her corporation. Even before making the calculations, she assumes the aftertax cost of debt is at least 2 percent less than that for preferred stock. eBook Debt can be issued at a yield of 8.5 percent, and the corporate tax rate is 25 percent. Preferred stock will be priced at $70 and pay a dividend of $5.50. The flotation cost on the preferred stock is $3. Hint Print a. Compute the aftertax cost of debt. (Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal places.) References Aftertax cost of debt b. Compute the aftertax cost of preferred stock. (Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal places.) Aftertax cost of preferred stock c. Based on the facts given above, is the treasurer correct? Yes, the treasurer is correct. O No, the treasurer is incorrect