Check my Sandra's Purse Boutique has the following transactions related to its top-selling Gucci purse for the month of October Sandra's Purse Boutique uses a periodic inventory system. Date Transactions Units Unit Cost Total Cost October 1 Beginning inventory 6 $900 October 4 Sale $ 5,400 4 October 10 Purchase 5 910 4,550 October 13 Sale 3 October 20 Purchase 920 3,680 October 28 Sale Octobet 30 Purchase 930 6,510 $20,140 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31, Ending inventory Cost of goods sold