Gallatin County Motors Inc. assembles and splls 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: If required, round interim per-unit calculations to the nearest cent. a. Prepare an income statement according to the absorption costing concept. direct labor, and factory overhead costs. Both fixed and variable factory costs are included as part of factory overhead. b. Prepare an income statement according to the variable costing concept