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. Units Unit Cost $900 Total Cost $ 5,400 910 4,550 Date October 1 October 4 October 10 October 13 October 20 October 28 October 30 Transactions Beginning inventory Sale Purchase Sale Purchase Sale Purchase 920 3,680 930 6,510 $20, 140 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31 Ending inventory Cost of goods sold