Problem 6-2A Grouper Corp markets CDs of numerous performing rtsts. At the beginning of March, Grouper Corp. had in beginning inventory 2,470 CDs wit March 52,090 $8 March 21 5,110 $10 March 13 3,570$9March 26 2,180 $11 During March 12,280 units were sold. Grouper Corp. uses a periodic inventory system unit cost of $7. During March, Grouper Corp. made the ollowing purchases of CDs (a) Determine the cost of goods avalable for sale The coat of goods svsible for sale 141220 (b) Calculate Average Cost. (Round ansver to 3 decimal places, e.g. 5.125.) Average Cost. 9.1 Determine (1) the ending inventory and (2) the cost of goods sold under each of the assumed cost fiow methods (FIFO, LIFO, and average-cost) (Round answers to 0 decimal places, e.g. 125.) LIFO AVERAGE-COST The ending inventory The cost of goods sold