nces 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 $800 $ 4,800 October 4 Sale 4 October 10 Purchase 5 810 4,050 October 13 Sale 3 October 20 Purchase 4 820 3,280 October 28 October 30 Sale 7 Purchase 6 830 4,980 $17,110 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31. Ending inventory Cost of goods sold