please I need 17 and 19

> Question 17 1 pts Sears Roebuck's preferred stocks are traded at $26.50 and pay a constant dividend of $1.29. What is Sears Roebuck's cost of preferred stock if the tax rate is 25967 T A 1 O 4.72% 3.65% 4.77% 4.92% 4.87% D Question 19 1 pts Dow Chemical's cost of common stock is 9.20%, cost of preferred stock is 18.00% and its cost of debt is 5.20%. The optimal capital structure is 20% common stock, 45% preferred stock and 35% of debt. The marginal tax rate is 15%. What is the WACC for Dow Chemical? O 11.76% O 11.15% 10.69% O 11.49% O 11.83%