Supply the missing data in the following cases. Each case is independent of the others. (Leave no cells blank be certain to enter "O" wherever required.) Case 2 3 4 Direct materials Direct labour Manufacturing overhead Total manufacturing costs Beginning work-in-process $6,300 $7,800$6,800 $ 4,800 5,800 10,800 4,800 5,800 8,800 6,800 20,300 4,300 21,800 4,800 5,800 invento Ending work-in-process inventory Cost of goods manufactured Sales Beginning finished goods inventory Cost of goods manufactured Goods available for sale Ending finished goods inventory Cost of goods sold Gross margin Operating expenses Net income 2,800 18,500 30,000 4,300 3,900 19,800 31,200 2,800 41,800 3,800 21,100 37,800 3,300 5,800 19,100 18,700 5,300 17,300 13,900 5,250 $5,800 $8,600$10,800