The following data are from the accounting records of Niles Castings for year 2 80,000 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 $ 270,000 66,000 33,000 20,000 43,000 12,000 35,000 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. Beled Required B