Bombardier Inc Has Common Stock Trading at a Price of $15,and

Bombardier Inc has common stock trading at a price of $15,and a market capitalization of $8 billion.The firm also has preferred stock worth a total of $2 billion,currently trading at $23 per share and paying a dividend of $2.75 per share.The firm's beta is 0.93,the risk-free rate is 3.2%,and the market risk premium is 7%.The firm has $12 billion of debt with a yield to maturity of 5%.If the firm's tax rate is 20%,what is Bombardier's WACC?

A) 4.12%
B) 6.8%
C) 8.56%
D) 7.3%
E) 7.57%