Beginning inventory, purchases, and sales for Product XCX are as follows: $13 Sep. 1 Beginning Inventory 24 units 5 Sale 12 units 17 Purchase 20 units $14 30 Sale 14 units Assuming a perpetual inventory system and the last in, first-out method, determine (a) the cost of the goods sold for the September 30 sale and (b) the inventory on September 30. a) Cost of goods sold $ 196 b) Inventory, September 30