Problem 6-1A Calculate ending inventory and cost of goods sold for four inventory methods (LO6-3) [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. Date Transactions Units Unit Cost October 1 Beginning inventory 6 $700 Total Cost $ 4,200 October 4 Sale 4 October 10 Purchase 5 710 3,550 October 13 Sale 3 October 20 Purchase 4 720 2,880 October 28 Sale 7 October 30 Purchase 8 730 5,840 $16,470 Problem 6-1A Part 3 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31. Ending inventory Cost of goods sold