Required: 1. Assume the company uses variable costing. Compute the unit product cost for one barbecue grill. 2. Assume the company uses variable costing. Prepare a contribution format income statement for last year. 3. How many barbecue grills must be sold to break even? Complete this question by entering your answers in the tabs below. Assume the company uses variable costing. Compute the unit product cost for one barbecue grill. Assume the company uses variable costing. Prepare a contribution format income statement for last year. How many barbecue grills must be sold to break even