The following data are from the accounting records of Niles Castings for year 2. Units produced and sold 85,000 Total revenues and costs Sales revenue $ 264,000 Direct materials costs. 68,000 Direct labor costs 34,000 Variable manufacturing overhead 17,000 Fixed manufacturing overhead 44,000 Variable marketing and administrative costs Fixed marketing and administrative costs 13,600 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 < Required A Required B