Below find a partially completed schedule of the company's total and per unit costs over a relevant range of 30,000 to 50,000 units produced and sold annually. 30,000 40,000 50,000 Units Produced and Sold Total Costs: Variable costs Fixed costs Total Costs $180,000 300,000 $480,000 ? ? ? ? ? ? Cost per unit: Variable cost Fixed cost Total Cost per Unit Required: Part a: ? ? ? ? ? ? ? ? ? In the table above, complete the schedule of Algonquin's total and unit costs by replacing the ? With the appropriate amounts. (6 marks) Part b In the space below Prepare a contribution margin income statement for the year assuming that Algonquin produces and sells 45,000 units during the year at a selling price of $16 per unit