The treasurer of Sutton Security Systems 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 3 percent less than that for preferred stock. Debt can be issued at a yieid of 76 percent, and the corporate tax tate is 35 percent. Preferred shares will be priced at $55 and pay a dividend of $3.80. The flotation cost on the preferred stock is $4. (Do not round intermedlate calculations. Pound the final answers to 2 decimal places.) a. Compute the aftertax cost of debt. Aftertax cost of debt b. Compute the aftertax cost of preferred stock. Aftertax cost of preferred stock c. Based on the facts given above, is she correct