Current Attempt in Progress The accounting records of Shamrock Electronics show the following data. Beginning inventory 2,900 units at $5 Purchases 7,400 units at $7 Sales 8,500 units at $10 Determine cost of goods sold during the period under a periodic inventory system using the FIFO method. (Round answer to 0 decimal places, eg. 1,250.) Cost of goods sold during the period FIFO Determine cost of goods sold during the period under a periodic inventory system using the LIFO method. (Round answer to 0 decimal places, e.. 1,250) Cost of goods sold during the period eTextbook and Media LIFO Determine cost of goods sold during the period under a periodic inventory system using the average-cost method. (Round average- cost per unit to 3 decimal places, eg. 12.502 and final answer to O decimal places, e.g. 1,250) Average-cost Cost of goods sold during the period $