A company has the following information regarding the cost of capital: Common Stock: $10/share with 3,000 shares outstanding, cost of equity is 6%; Preferred Stock: 5% preferred stock selling at par, with $5,000 market value; Debt: pre-tax cost of debt is 4%, tax rate is 21%. $50,000 market value. What is the firm's weighted average cost of capital? O 5.23% O 3.66% 6.04% O 4.27%