Longstreet Communications Inc. has the following capital structure: Debt 25%; Preferred Stock 15%; and Common Stock 60%.The company has a dividend payout ratio of 30%, and a tax rate of 40%.Last year Longstreet paid $3.60 dividends per share and dividends are expected to grow at 9% in the future.Their common stock currently sells at $60 per share; preferred stock sells at $100 per share with $11 dividend. Before tax cost of debt is 9%

a) calculate the after-tax cost of debt, cost of preferred and cost of common stock.

b) what is the weighted average cost of capital for Longstreet?