Gibson Manufacturing Company established the following standard price and cost data. Gibson planned to produce and sell 2,400 units. Actual production and sales amounted to 2,600 units. Required a. Prepare the pro forma income statement in contribution format that would appear in a master budget. b. Prepare the pro forma income statement in contribution format that would appear in a flexible budget Complete this question by entering your answers in the tabs below. Prepare the pro forma income statement in contribution format that would appear in a master budget. a. Prepare the pro forma income statement in contribution format that would appear in a master budget. b. Prepare the pro forma income statement in contribution format that would appear in a flexible budget. Complete this question by entering your answers in the tabs below. Prepare the pro forma income statement in contribution format that would appear in a flexible budget