The following data are from the accounting records of Niles Castings for year 2. Units produced and sold 81,000 Total revenues and costs Sales revenue $350,000 Direct materials costs 65,000 Direct labor costs 37,000 17,000 Variable manufacturing overhead Fixed manufacturing overhead 44,000 13,500 Variable marketing and administrative costs Fixed marketing and administrative costs 32,000 Required: a. Prepare a gross margin income statement. b. Prepare a contribution margin income statement. Required A Required B Prepare a gross margin income statement. Gross Margin Income Statement Required A Required B Prepare a contribution margin income statement. Contribution Margin Income Statement