The accounting records of Teal Mountain Electronics show the following data. Beginning inventory 2,000 units at $6 Purchases 8,000 units at $7 Sales 9,000 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, e.g. 1,250.) FIFO Cost of goods sold during the period Question Part Score Determine cost of goods sold during the period under a periodic inventory system using the LIFO method. (Round answer to 0 decimal places, e.g. 1.250.) LIFO Cost of goods sold during the period $ Question Part Score 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, e.g. 12.502 and final answer to O decimal places, e.g. 1.250.) Average-cost Cost of goods sold during the period $