4. Using the following information below, calculate the ending inventory balance, and cost of goods sold using (30 points); Actviities Date Aug-01 Aug-10 Aug-20 Aug-25 Aug-30 Beginning Inventory Sales Purchases Sales Purchases Total 150 units @ $7.00 Units Acquired at Cost 220 units @ $6.00 90 units @ $5.00 460 units a) Specific Identification b) Average Cost Method c) FIFO d) LIFO 1,050 1,320 450 Units Sold at Retail 90 units @ $15 145 units @ $15 2,820 235 units ((For specific identification, ending inventory consists of 225 unts, where 90 units are from the Aug 30 purchase, 80 are from the Aug 20 purchase, and 55 from the beginning inventory.)