If required, round interim per-unit calculations to the nearest cent. a. Prepare an income statement according to the absorption costing concept. Gallatin County Motors Inc. Absorption Costing Income Statement For the Month Ended July 31 Sales Cost of goods sold Gross profit Selling and administrative expenses Operating income b. Prepare an income statement according to the variable costing concept. Gallatin County Motors Inc. Variable Costing Income Statement For the Month Ended July 31 Sales Variable cost of goods sold Manufacturing margin Variable selling and administrative expenses Contribution margin Fixed costs: Fixed factory overhead costs X Fixed selling and administrative expenses X 0 x Total fixed costs Operating income If required, round interim per-unit calculations to the nearest cent. a. Prepare an income statement according to the absorption costing concept. Gallatin County Motors Inc. Absorption Costing Income Statement For the Month Ended July 31 Sales Cost of goods sold Gross profit Selling and administrative expenses Operating income b. Prepare an income statement according to the variable costing concept. Gallatin County Motors Inc. Variable Costing Income Statement For the Month Ended July 31 Sales Variable cost of goods sold Manufacturing margin Variable selling and administrative expenses Contribution margin Fixed costs: Fixed factory overhead costs X Fixed selling and administrative expenses X 0 x Total fixed costs Operating income