Accounting records for The Ralston Company show the following for the most recent fiscal year: 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. Prepare a gross margin income statement. 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. Prepare a contribution margin income statement. 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. Prepare a gross margin income statement