Inventory records for Herb's Chemicals revealed the following: March 1, 2021, inventory: 1,750 gallons $8.7 per gallon = $15,225 Purchases: Mar. 10 Mar. 16 Mar. 23 750 gals @ $8.75 950 gals ASR.RO 750 gals @ $8.85 Sales: Mar. 5 Mar. 14 Mar. 20 Mar. 26 550 gals 850 gals 650 gals 850 gals The ending inventory under a periodic inventory system assuming average cost (rounding unit cost to three decimal places) is: Multiple Choice $11,376 O $11,304 O C $11,386