The Weighted Average Cost of Capital is sometimes called the Opportunity Cost of Capital because there is a cost of using financing. Calculate the opportunity cost of capital for a firm with the following capital structure: 30% preferred stock, 50% common stock and 20% debt.The firms has a cost of debt of 8.43%, a cost of preferred stock equal to 10.58% and a 13.86% cost of common stock. The firm has a 27% tax rate. You answer should be entered as a %, for example 15.48%