The inventory records for Ramirez Co, reflected the following Beginning Inventory @ May 1 First Purchase a May 7 Second Purchase a May 17 Third Purchase a May 23 Sales a May 31 200 units a $2.00 300 units a $2420 500 units @ $2.30 100 units a $2.40. 900 units 2 $3.90 Determine the weighted average cost per unit for May. O $2.23 $1.45 O $2.45 O $3.17