Shadow Corp. has no debt but can borrow at 6.5 percent. The firm's WACC is currently 9.8 percent, and the tax rate is 35 percent. What is the company's cost of equity? If the company converts to 25 percent debt, what will it cost of equity be? If the company converts to 50 percent debt, what will it cost of equity be? What is the company's WACC in part (b)? In part (c)