Inventory records for Herb's Chemicals revealed the following: March 1, 2016, inventory: 1,000 gallons @ $7.20 = $7,200 Purchases: Mar. 10 IMar. 16 Mar. 23 600 gals @ $7.25 1800 gals @ $7.30 600 gals @ $7.35 Sales: Mar. 5 400 gals Mar. 14 700 gals Mar. 20 500 gals Mar. 26 700 gals The ending inventory under a periodic inventory system assuming average cost (rounding unit cost to three decimal places) is: Multiple Choice $5,005. $5.087. O $5,077. O $5,107