Willow enterprises has an after-tax cost of debt of 6%, a cost of common stock of 17%, and a cost of preferred stock of 10%. Of the $1 billion in assets on Willow enterprises balance sheet, $500 million is financed with debt, $50 million is financed with preferred stock, and the remainder is financed with common stock. What is Willow enterprises weighted average cost of capital (WACC)? 7.7% 8.6% 10.5% 11.2%