Exercise 2-17 (Part Level Submission) Erin Brushwood sells gourmet chocolate chip cookies. The results of her last month of operations are as follows: Sales revenue $ 50,000 Cost of goods sold (all variable) 26,250 Gross margin 23,750 Selling expenses (75% variable) 8,000 Administrative expenses (25% variable) 13,000 Operating income $ 3,750 Prepare a contribution format income statement for Erin. (Round answers to decimal places, e.g. 5,275.) S S