Sandra's Purse Boutique has the following transactions related to its top-selling G Sandra's Purse Boutique uses a periodic inventory system. Unit Cost $ 890 Total Cost $ 5,340 Date October 1 October 4 October 10 October 13 October 20 October 28 October 30 Transactions Beginning inventory Sale Purchase Sale Purchase Sale Purchase Units 6 4 5 909 4,500 3 910 3,640 4 7 6 920 5,520 $19,000 Using LIFO, calculate ending inventory and cost of goods sold at October 31. Ending inventory Cost of goods sold N