a. Determine the cost of goods sold and ending merchandise inventory by preparing a perpetual inventory record using the specific identification method. Assume the following costing information for the books sold during the month: August 3: 4 books costing $13 each August 15: 4 books costing $13 each and 2 books costing $15 each August 28: 2 books costing $15 each and 1 books costing $17 each b. Determine the cost of goods sold and ending merchandise inventory by preparing a perpetual inventory record using the FIFO inventory costing method c. Determine the cost of goods sold and ending merchandise inventory by preparing a perpetual inventory record using the LIFO inventory costing method. d. Determine the cost of goods sold and ending merchandise inventory by nrenarinn a nernetual inventonu record usinn the weinhted-averane inventone Assume the following costing information for the books sold during the month: August 3: 4 books costing $13 each August 15: 4 books costing $13 each and 2 books costing $15 each August 28: 2 books costing $15 each and 1 books costing $17 each b. Determine the cost of goods sold and ending merchandise inventory by preparing a perpetual inventory record using the FIFO inventory costing method. c. Determine the cost of goods sold and ending merchandise inventory by preparing a perpetual inventory record using the LIFO inventory costing method. d. Determine the cost of goods sold and ending merchandise inventory by preparing a perpetual inventory record using the weighted-average inventory costing method. Round weighted average unit cosf to the nearest cent and total cost to the nearest dollar. Aug.1 Beginning merchandise inventory, 9 books @ $13 each Aug.3 Sold 4 books @ $17 each Aug. 12 Purchased 5 books @ \$15 each Aug.15 Sold 6 books @ \$17 each Aug. 20 Purchased 2 books @ \$17 each Aug.28 Sold 3 books @ \$20 each