The inventory records for Radford Co. reflected the following 1,200 units e $4.00 1,300 units@ $4.20 1,500 units$4.30 1,100 units e $4.40 3,900 units @ $5.90 Beginning inventory e May 1 First purchase e May 7 second purchase e May 17 Third purchase e May 23 Sales @ May 31 Determine the amount of gross margin assuming the FIFO cost flow method. Multiple Cholce $16,280 $6,260 $7410 $6,730