The cost of equity using the discounted cash flow (or dividend growth) approach

Kirby Enterprisess stock is currently selling for $25.67 per share, and the firm expects its per-share dividend to be $2.35 in one year. Analysts project the firms growth rate to be constant at 5.72%. Using the cost of equity using the discounted cash flow (or dividend growth) approach, what is Kirbys cost of internal equity?

14.87%

14.13%

18.59%

15.61%