Which of the following best describes why the predicted incremental camnings arising from a given decision are not sufficient in and of themselves to determine whether that decision is worthwhile? O A They do not show how the firm's camings are expected to change as the result of a particular decision OB. They are not easily predicted from historical financial statements of a firm and its competitors. C. These earnings are not actual cash fows OD. They do not tell how the decision affects the firm's reported profits from an accounting perspective