PROBLEM I The Pins Shop shows the following data related to an item of inventory Inventory, January1 Purchases, January 9 300 units @ $5.40 100 units @ $5.00 Purchases, January 19 70 units @ $6.00 Ending Inventory, January 31 REQUIRED (a) Using the periodic system, what value should be assigned to the ending inventory 120 units AND cost of goods sold using FIFO? Using the periodic system, what value should be assigned to the ending inventory AND cost of goods sold using LIFO? (b)