March 1, 2024, inventory: 1,850 gallons @ $8.90 per gallon = $16,465 Purchases: March 10 770 gallons @ $8.95 Sales: March 5 570 gallons March 16 970 gallons @ $9.00 March 14 870 gallons March 23 770 gallons @ $9.05 March 20 670 gallons March 26 870 gallons The ending inventory under a periodic inventory system assuming average cost is: Note: Round unit cost to three decimal places and final answer to whole dollars. Multiple Choice $12,361. $12,279. $12,381.