Gallatin County Motors Inc. assembles and sells snowmobile engines. The company began operations on July 1 and operated at 100% of capacity during the first month. The following data summarize the results for July: Sales (14,500 units) $1,740,000 Production costs (19,000 units): Direct materials $843,600 Direct labor 404,700 Variable factory overhead 203,300 Fixed factory overhead 134,900 1,586,500 Selling and administrative expenses: Variable selling and administrative expenses $245,900 Fixed selling and administrative expenses 95,200 341,100 If required, round interim per-unit calculations to the nearest cent. Question Content Area 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 $- Select - - Select - $- Select - - Select - $- Select - Question Content Area 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 $- Select - - Select - $- Select - - Select - $- Select - Fixed costs: $- Select - - Select - - Select - $- Select - Question Content Area c. What is the reason for the difference in the amount of operating income reported in (a) and (b)? Under the method, the fixed manufacturing cost included in the cost of goods sold is matched with the revenues. Under , all of the fixed manufacturing cost is deducted in the period in which it is incurred, regardless of the amount of inventory change. Thus, when inventory increases, the income statement will have a higher operating income.