The inventory records for Radford Company reflected the following: Beginning inventory @ May 1 1,800 units @ $5.20 First purchase @ May 7 1,900 units @ $5.40 Second purchase @ May 17 2,100 units @ $5.50 Third purchase @ May 23 1,700 units @ $5.60 Sales @ May 31 5,700 units @ $7.10 If the company uses the weighted average inventory cost flow method, what is the average cost per unit (rounded) for May? Multiple Choice $5.43 $5.37 $5.50