Assume the market value of Fords' equity, preferred stock and debt are $8 billion, $3 billion, and $15 billion, respectively. Ford has a beta of 1.8, the market risk premium is 8%, and the risk-free rate of interest is 4%. Ford's preferred stock pays a dividend of $3.50 each year and trades at a price of $27 per share. Ford's debt trades with a yield to maturity of 10.0%. What is Ford's weighted average cost of capital if its tax rate is 25%? A) 11.48% B) 13.78% C) 12.63% D) 12.06%