Current Attempt in Progress Elizabeth Brown sells gourmet chocolate chip cookies. The results of her last month of operations are as follows: Sales revenue Cost of goods sold (all variable) Gross margin $ 100,000 40,000 60,000 Selling expenses (75% variable) 12,800) Administrative expenses (25% variable) 20,800 Operating income $ 26,400 (a) Your answer is partially correct. Prepare a contribution format income statement for Elizabeth. (Round answers to O decimal places, e.g. 5,275.) Sales Revenue Varlable Expenses Cost of Goods Sold Selling Expense Administrative Expense Total Variable Expenses Contribution Margin Fixed Expenses Selling Expense Administrative Expense Total Fixed Expenses Operating Income 69 $ 40000 100000