walter utilities is a dividend-paying company and is expected to pay an annual divident of $2.65 at the end of the year. Itts dividend is expected to grow at a constant rate of 8.00%p per year. If walter's stock currently trades for $21.00 per share, what is the expected rate of return?

a. 9.14%

b. 15.82 %

c. 20.62%

d. 8.12%