The following data are from the accounting records of Niles Castings for year 2: 85,000 Units produced and sold Total revenues and costs Sales revenue Direct materials costs Direct labor costs Variable manufacturing overhead Fixed manufacturing overhead Variable marketing and administrative costs Fixed marketing and administrative costs $ 290,000 63,000 31,000 14,000 49,000 15,000 33,000 Required: a. Prepare a gross margin income statement. Gross Margin Income Statement b. Prepare a contribution margin income statement. Contribution Margin Income Statement