Current Attempt in Progress Metlock, Inc. uses a periodic imventory system and reports the following for the month of June. Compute the cost of the ending inventory and the cost of goods sold under FIFO, LIFO, and average-cost. (Round per unit cost to 3 decimal places, es. 15.647 and final answers to 0 decimal ploces, es. 5,125.) Which costing method gives the highest ending inventory? The highest cost of goods sold? Highest ending imventory Highest cost of goods sold