Required information SB The inventory records for Radford Co. reflected... [The following information applies to the questions displayed below.] The inventory records for Radford Co. reflected the following: Beginning inventory @ May 1 First purchase @ May 7 Second purchase @ May 17 Third purchase @ May 23 Sales May 31 100 units @ $4.00 300 units @ $4.40 500 units @ $4.60 100 units @ $4.80 900 units @ $7.80