Compute the cost assigned to ending inventory using (a) FIFO, (b) LIFO, ( d ) weighted average, and ( d ) specific identification. For specific identification, units sold consist of 605 units from beginning inventory, 305 from the February 10 purchase, 205 from the March 13 purchase, 55 from the August 21 purchase, and 260 from the September 5 purchase. Note: Round your average cost per unit to 2 decimal places. Round your final answers to the nearest whole dollar amount. Ending Inventory (a) FIFO $ 18,400 (b) LIFO $ 18,000 (c) Weighted average $ 17,150 (d) Specific identification $ 18,180 Compute gross profit earned by the company for each of the four costing methods FIFO, LIFO, Weighted Average, and Specific Identification