Barton Industries expects that its target capital structure for raising funds in the future for its capital budget will consist of 40% debt, 5% preferred stock, and 55% common equity. Note that the firm's marginal tax rate is 25%. Assume that the firm's cost of debt, rd, is 7.9%, the firm's cost of preferred stock, rps, is 7.4% and the firm's cost of equity is 11.9% for old equity, rs, and 12.3% for new equity, re. What is the firm's weighted average cost of capital (