Edwards Company uses a perpetual inventory system. It entered into the following purchase and sale transactions in 2019: Units Acquired at Cost Cost Units Sold at Retail 300 units @ $55/unit = 350 units @ $56/unit = 250 units @ $57/unit = $16,500 19,600 14,250 Date Activities Beginning Jan 1 inventory Jan 10 Purchase Feb 13 Purchase Feb 15 Sale July 21 Purchase Aug 5 Purchase Aug 10 Sale Total 400 units @ $90/unit 250 350 units @ $58/unit = units @ $59/unit = 14,500 20,650 300 units @ $90/unit 700 units 1,500 units $85,500 Note that then number of units in ending inventory should be 800 calculated by taking the number of units available (1,500) less the number of units sold (700). Required Determine the cost assigned to ending inventory and cost of goods sold using the following cost flow assumptions: a. FIFO b. LIFO C. Weighted average