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 $ 820 $ 4,920 October 4 Sale 4 October 10 Purchase 5 830 4,150 October 13 Sale 3 October 20 Purchase 4 840 3,360 October 28 Sale 7 October 30 Purchase 8 850 6,800 $ 19,230 2. Using FIFO, calculate ending inventory and cost of goods sold at October 31.