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 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.
(And may I add if you can list how you got each of the number? I seem to struggle on the COGS