The inventary records for Aberco reflected the follow Beginning Inventory 100 USD First Purchase 250 4.50 Second Purchase 300 units 55.00 Third Purchase 200units@$5.50 121 Sold 600 units @$7.00 per unit A. Calculate Cost of goods sold under FIFO. 8. Calculate ending inventory under LIFO. C.Calculate Gross margin under weightage average method. 123 3