! Required information [The following information applies to the questions displayed below.) 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. Unit Cost $850 Total Cost $ 5,100 860 Date October 1 October 4 October 10 October 13 October 20 October 28 October 30 Units 6 4 5 3 4,300 Transactions Beginning inventory Sale Purchase Sale Purchase Sale Purchase 870 3,480 7 8 880 7,040 $19,920 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31 Ending inventory Cost of goods sold