Caillou Gulliano Incorporated recently reported the following information: (Sales )/(Total Assets) 2.25 Return on Assets (ROA) 4.5% Return on Equity (ROE) 7.5% Assuming the firm uses only debt and common equity, so total assets equal total invested capital. Answer the following questions: What is Caillou Gulliano's profit margin? a) 4% b) 3% Oc) 5% Od 2% e) 1%