Selected account balances for the year ended December 31 are provided below for BFun Company: Sales revenue.. .$1,000,000 Selling and administrative salaries... $110,000 Purchases of raw materials..... $290,000 Direct labor ....... ...? Advertising expense. $80,000 Manufacturing overhead. .$270,000 Sales Commissions $50,000 Inventory balances at the beginning and end of the year were as follows: Raw materials Work in process Finished goods Beginning of the Year $40,000 ? $50,000 End of the Year $10,000 $35,000 ? The total manufacturing costs for the year were $683,000; the goods available for sale totaled $740,000; and the cost of goods sold totaled $660,000. 5. As the manager in charge of production costs, explain to the president of the company the reason for any difference in average total cost per unit between (3e) and (40) above. 6. Prepare a traditional income statement AND a contribution margin income statement implementing all of the information that you have figured out to this point utilizing 50,000 units produced and sold