Perpetual Inventory Using LIFO Beginning inventory, purchases, and sales for Item 88-HX are as follows: Oct. 1 Inventory 108 units $20 8 Sale 86 units 15 Purchase 120 units $23 27 Sale 101 units Assuming a perpetual Inventory system and using the last in, first-out (LFO) method, determine (a) the cost of goods sold on Oc. 77 and () the inventory on Oct. 31. a. Cost of goods sold on Oct. 27 b. Inventory on Oct. 31