The following data are from the accounting records of Niles Castings for year 2 81,000 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 $330,000 65,000 30,000 13,000 46,000 16,000 30,000 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 $ 330.000 Prepare a gross margin income statement Gross Margin Income Statement Sales revenue Variable manufacturing costs Exed manufacturing overhead costs (Gross margin bed marketing and administrative costi Variable marketing and administrative costs Operating profit D Required B > 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 contribution margin income statement. Contribution Margin Income Statement Sales revenue Variable manufacturing costs Variable marketing and administrative costs Contribution margin Fixed marketing and administrative costs Fixed manufacturing costs Operating profit