Please find the WACC

A firm has determined its optimal capital structure, which is comprised of at market value proportions: Debt: The firm can sell a 20 year, $1000 par value, 7 promo. Interest is payable annualy. preferred stock: The firm has determined it can issue preferred stock at $65 per share. The stock will pay an $8.00 annual dividend. Common stock: The firm's common stock is currently selling for \$40 per share. The dividend expected to be paid at the end of the coming year is $3.00. Its dividend payments have been growing at a constant rate of 58. Additionally, the firm's marginal tax rate is 40 percent. What are the firm's after tax cost of debt, cost of preferred stock, cost of common stock, and the weighted average cost of capital