How is the beginning inventory and deduct ending inventory calculated?

ClearView Corporation manufactures and sells 50-inch television sets and uses standard costing. Actual data relating to January, February, and March 2020 are as follows: The selling price per unit is $2,700. The budgeted level of production used to calculate the budgeted fixed manufacturing cost per unit is 1,300 units. There are no price, efficiency, or spending variances. Any production-volume variance is written off to cost of goods sold in the month in which it occurs. Read the requirements. (Click to view the data.) (b). Prepare income statements for ClearView in January, February, and March 2020 under absorption costing. Complete the top half of the income statement for each month first, then complete the bottom portion. (Enter a "0" for any zero balance accounts. Label any variances as favorable (F) or unfavorable (U). If an account does not have a variance, do not select a label. Abbreviation used; Adj. = Adjustment, Mfg. = Manufacturing.) January 2020 March 2020 February 2020 $3,442,500 Revenues $3,240,000 $3,645,000 Cost of goods sold: Beginning inventory S 0 Variable manufacturing costs 845,000 533,000 Allocated fixed manufacturing costs Cost of goods available for sale 1,378,000 Deduct ending inventory. (106,000) 0 Adj. for production-volume variance Cost of goods sold 1,422.800 2,222,200 Gross margin Fixed operating costs 200,000 843,750 Variable operating costs Operating income $1,178,450 1 1,272.000 1,968,000 200,000 750,000 $1,018.000 S 106,000 828,750 522,750 1,457,500 (106,000) 10,250 U 1,361,750 2,080,750 200,000 796,875 S 1,083,875 $ 106,000 858,000 541,200 1,505,200 (74,200) (8,200) F Data table Unit data: Beginning inventory Production Sales Variable costs: Manufacturing cost per unit produced Operating (marketing) cost per unit sold Fixed costs: Manufacturing costs Operating (marketing) costs Print GA GA $ January 0 1,300 1,200 650 $ 625 $ 533,000 $ 200,000 $ Done February March 100 1,275 1,275 650 $ 625 $ 533,000 $ 200,000 $ 100 1,320 1,350 650 625 533,000 200,000 X