South Park is expected to pay a $2.50 annual dividend on its common stock next year, and increase dividend payment at a rate of 4.5 percent per year thereafter. The stock is currently selling for $30 a share. What is the required rate of return? Select one: O a. 12.83 percent b. 10.53 percent C 13.21 percent d. 14.07 percent De 11.60 percent