Ta.com has a beta of 1.24, a stock price of $22, and recently paid an annual dividend of $0.94 a share. The dividend growth rate is a 4.5 percent. The market has a 10.6 percent rate of return and a risk premium of 7.5 percent. What is the firm's cost of equity.
a. 7.05%
b. 8.67%
c. 9.13%
d. 10.30%
e. 10.68%