Which of the Following Statements Is Incorrect

Which of the following statements is incorrect?

A) One of the common approaches to valuing common stock is the discounted cash flow approach, with its many variations.
B) Valuing common stock is more straightforward than valuing bonds or preferred stock because of the certainty of future cash flows to owners and the timing of such cash flows.
C) One of the common approaches to valuing common stock is the method of multiples, using the market's evaluation of the value of equity of similar companies to value a company's equity.
D) We generally value preferred stock using discounted cash flow methods, discounting the expected dividends at a discount rate that reflects the uncertainty associated with the payment of these dividends.