The inventory records for Radford Co. reflected the following Beginning inventory e May 1 First purchase @ May 7 second purchase @ May 17 Third purchase @ May 23 Sales & May 31 300 units @ $2.20 400 units @ $2.40 600 units @ $2.50 200 units @ $2.60 1,200 units @ $4.10 Determine the amount of gross margin assuming the weighted average cost flow method. (Round your intermediate calculations to 2d 0 O $2.004 0 0 $1800 0 O $1200