The inventory records for Radford Company reflected the following Beginning inventory on May 1 1,200 units @ $4.00 First purchase on May 7 1,300 units @ $4.20 Second purchase on May 17 1,500 units @ $4.30 Third purchase on May 23 Sale on May 31 What is the amount of ending inventory assuming the FIFO cost flow method is used? 1,100 units @ $4.40 4,000 units @ $5.90