Ratio analysis is an important component of evaluating company performance. It can provide great insights into how a company matches up against itself over time and against other players within the industry, However, like many tools and techniques, ratio analysis has a few limitations and weaknesses. Which of the following statements represent a weakness or limitation of ratio analysis? Check all that apply. A firm may operate in multiple industries A firm's financial statements show only one period of financial data Different firms may use different accounting practices