20. Which of the following statements is incorrect? A. A negative free cash flow means that the firm's operations are not producing any cash flows for investors and always indicates that the firm is mismanaged. B. A positive free cash flow means that the firm's operations are producing cash flows for investorsboth bondholders and shareholders. C. Free cash flows are the cash flows available to investors after the firm has made the necessary investments in the firm's operations. D. All of these statements are correct.