Which statement about profit margins is true?

• A. They are identical and measure the same thing.
• B. They represent different stages of profitability: gross, operating, net.
• C. They only relate to cash flows.
• D. They only apply to service industries.

Answer: (B)

Profit margins come in several forms because each one captures profitability after different sets of costs, at different points in the income statement. Gross margin focuses on how efficiently production or procurement turns into revenue by subtracting the cost of goods sold. Operating margin goes a step further by accounting for operating expenses like SG&A, showing profit from ongoing operations. Net margin finally includes all costs and income, such as interest and taxes, giving the overall profitability relative to revenue.

This layering explains why the statement that they represent different stages of profitability is the true one. They’re not all the same measure, they aren’t purely about cash flow, and they aren’t restricted to service industries—every business can report these margins to understand different aspects of profitability.