The market rate of return is 11.8 percent and the risk-free rate is 3.45 percent. Galaxy Co. has 36 percent more systematic risk than the overall market and has a dividend growth rate of 3.5 percent. The firm's stock is currently selling for $42 a share and has a dividend yield of 2.8 percent. What is the firm's cost of equity?

19.82 percent

10.55 percent

15.31 percent

16.28 percent

21.11 percent