3. Compute the cost assigned to ending inventory using (a) FIFO, (b) LIFO, (c) weighted average, and (d) specific identification. For specific identification, units sold consist of 680 units from beginning inventory, 380 from the February 10 purchase, 280 from the March 13 purchase, 130 from the August 21 purchase, and 410 from the September 5 purchase. (Round your average cost per unit to 2 decimal places. Round your final answers to the nearest whole dollar amount.) (a) FIFO (b) LIFO (c) Weighted average (d) Specific identification Ending Inventory