Given the following information for Huntington Electric Co., *Debt: 6,000 of 8 percent coupon bonds outstanding, $1,000 par value, 10 years to maturity, selling for 108 percent of par; the bonds make annual payments. *Preferred stock: 8000 shares of 7.2% preferred stock dividend rate, selling at $90 per share. *Common stock: 500,000 shares outstanding, selling for $70 per share; the beta is 1.12. *Market data: 10 percent market rate of return and 5 percent risk-free rate, and the corporate tax rate of 30%. What is the cost of common stock? Group of answer choices 10.6% 8.2% 10% 7.2%