Peter Parker Inc. has no debt but can borrow at 5.9%. The firm's Weighted Average Cost of Capital (WACC) is currently 9.20% and the tax rate is 21%. i. What is the company's cost of equity? ii. If the company converts to 25% debt, what will its cost of equity be? iii. If the company converts to 50% debt, what will its cost of equity be? iv. What is the company's WACC in parts (ii) and part (iii)?