Answer: B.
Explanation: The multi-step income statement is ultimately used in determining Net Income which is calculated by separately determining :
1. Gross profit( Net sales - cost of goods sold)
2. Operating income( Operating expenses - Gross profit)
3. Operating income combined with non - operating revenue, losses, profit and expenses to obtain the net income or loss.
Conclusively, Gross profit(margin) will be calculated separately, which then be used to obtain the operating income.