Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). Prove the accuracy of the cost of goods sold under the FIFO and LIFO methods. (Round per unit cost to 3 decimal places, e.g. 15.647 and final answers to 0 decimal places, e.g. 5,125.) FIFO LIFO AVERAGE-COST The ending inventory $ The cost of goods sold $ EA tA $ EA $ +A $ EA $ K