Aug 1 Beginning Inventory 40 units @ $20 Aug 5 Purchase 45 units @ $23 Aug 8 Sale 25 units Aug 12 Purchase 30 units @ $26 Aug 18 Purchase 35 units @ $28 Aug 25 Sale 60 units Aug 29 Purchase 15 units @ $30 Assuming that the periodic inventory system is used the ending inventory under the LIFO costing method is: Select one: O a $2,210 O b. $1,720 OC $2,105 Od $1,840