3. (20 points) The following information is available for two firms in the same industry. | Item | Firm A | Firm B | | --- | --- | --- | | Net Income | $60 million | $60 million | | Sales | $1,200 million | $800 million | | Total Assets | $600 million | $400 million | | Total Equity | $300 million | $150 million | First, calculate the profit margin, total asset turnover, equity multiplier, and ROE for each firm. Then, using the DuPont framework, explain why two firms with the same net income may have different ROEs.