i need help with A, B, C, and D thank you

P14-3 (similar to) Question Help (Individual or component costs of capital) Compute the cost of capital for the firm for the following: a. A bond that has a $1,000 par value (face value) and a contract or coupon interest rate of 11.6 percent. Interest payments are $58.00 and are paid semiannually. The bonds have a current market value of $1,122 and will mature in 10 years. The firm's marginal tax rate is 34 percet. b. A new common stock issue that paid a $1.83 dividend last year. The firm's dividends are expected to continue to grow at 6.1 percent per year, forever. The price of the firm's common stock is now $27.17. c. A preferred stock that sells for $136, pays a dividend of 8.7 percent, and has a $100 par value. d. A bond selling to yield 12.3 percent where the firm's tax rate is 34 percent. a. The after-tax cost of debt is %. (Round to two decimal places.)