16. Great Wall, Inc. reports the following income statement for the most recent year: Sales revenue (3,000 units sold) $ 75,000 Cost of goods sold: Variable (36,000) Cost of goods sold: Fixed (4,000) Gross margin 35,000 Administrative salaries (10,000) Advertising Expense ($2,000 plus 1% sales) (2,750) Depreciation (6,000) Supplies ($3 per unit) (9,000) Net Income $ 7,250 Which of the following represents the company's contribution margin? A) $25,250 B) $23,250 C) $29,250 D) $27,250 E) $35,000