Dharave Distillers has a capital structure comprising of equity, preference, and debt in the ratio of 5:2:3. The cost of equity (Ke) is 19%, the cost of preference shares (Kp) is 17%, the after-tax cost of debt (Kd) is 14. What is the weighted average cost of capital (WACC)?

a. 15.39%

b. 17.10%

C. 18.81%

d. 17.96%

I need clarification, how we got the answer (17.10% )? with steps ,