18. (Weighted cost of Capital) The capital structure for the Carrion Corporation is provided below. The company plans to maintain its debt structure in the future. The firm has a 7.00 percent cost of debt, a 15 percent cost of preferred stock, 6.5 percent cost of common stock, what is the firm's weighted cost of capital? Capital structure (Rs000) Debt Preferred stock Common stock (4, 50,000 @ Rs. 10) Rs. 7,000 3500 4,500