The following data are from the accounting records of Niles Castings for year 2. Units produced and sold 88,000 Total revenues and costs Sales revenue $290,000 Direct materials costs 64,000 Direct labor costs 35,000 Variable manufacturing overhead 16,000 Fixed manufacturing overhead 44,000 Variable marketing and administrative costs Fixed marketing and administrative costs 17,000 33,000 Required: a. Prepare a gross margin income statement. b. Prepare a contribution margin income statement. Complete this question by entering your answers in the tabs below. Required A Required B Prepare a gross margin income statement. Gross Margin Income Statement