The instructor said reasons why a company's Weighted Average Cost of Capital ("WACC) is critically important include: (Select all the answers that apply.) the WACC is the rate of return which must be earned by the Common and Preferred Stockholders' Equity. the WACC is the minimum rate of return to be earned on Common Stockholders'Equity. the WACC is the minimum rate of Free Cash Flow return to be earned on total assets or proposed projects. the WACC helps management to understand the minimum dollar amount of Free Cash Flow which must be produced each year