The inventory records for Radford Co. reflected the following: 1 Beginning inventory @ May 1 First purchase May 7 Second purchase May 17 Third purchase May 23 Sales May 31 ,500 units @ $4.60 1,600 units $4.80 1.800 units @ $4.90 ,400 units 55.00 4.800 units @ $6.50 1 If the company uses the weighted average inventory cost flow method, what is the average cost per unit (rounded) for May? Multiple Choice O $483 0547