Gardner electric has a beta of 0.88 and an expected dividend growth rate of 4.00% per year. the t-bill rate is 4.00%, and the t-bond rate is 5.25%. the annual return on the stock market during the past 4 years was 10.25%. investors expect the average annual future return on the market to be 12.50%. using the sml, what is the firm's required rate of return?
a. 12.22%
b. 11.92%
c. 11.63%
d. 12.52%
e. 11.34%