The inventory records for Radford Company reflected the following: Beginning inventory @ May 1 First purchase @ May 7 Second purchase @ May 17 Third purchase @ May 23 Sales @ May 31 100 units @ $4.60 300 units @ $5.00 500 units @ $5.20 100 units @ $5.40 900 units @ $8.40 What is the amount of ending inventory assuming the FIFO cost flow method