4. (20 Poi nts) The beginning inventory balance of South Tablet Inc. on August 1 & the purchases of merchandise during August were as follows: August 7 Purchase August 28 Purchase. August 1 Beginning Inventory. 450 units @ 1.00 $ 450.00 1,800 units 1.10 1,980.00 900 units 1.12 1,008.00 900 units 1.16 1,044.00 450 units @ 1.25 563.00 4,500 5,045.00 In October 31st, the ending inventory consisted of 675 units. Determine the cost of the ending inventory, based on each of the following methods of inventory valuation: a. Average Cost b. FIFO First In, First Out c. LIFO - Last In, First Out d. Compute the Cost of Goods sold if LIFO inventory method is used