Which of the following statements is TRUE? O. If a company's operating margin increases but its profit margin decreases, it could mean that the company paid less in interest or taxes. b. Comparison of dollar values on two firms' financial statements is the best way to analyze the firm's relative financial health. .O c. Cash flow from assets should equal cash flow to shareholders, od According to the DuPont identity, all else held constant equal, an increase in the use of debt would increase a firm's ROE