PLEASE ANSWER 21 AND 22 SHOWING ALL CALCULATIONS. No charts please :) thank you.

Greene Inc. has a required return on assets of 15%, a cost of debt of 8%, and is 35% financed with debt. There are no corporate taxes. 21. What is the firm's levered cost of equity? A) 13.52% B) 18.77% C) 15.00% D) 17.11% E) 19.31% 22. If the firm were to change its capital structure so that it is financed with 50% debt, what would be the new WACC? A) 15.00% B) 13.38% C) 16.79% D) 11.50% E) None of the above