3 The inventory records for Radford Company reflected the following Beginning inventory on May 1 First purchase on May 7 Second purchase on May 17 Third purchase on May 23 Sale on May 31 600 units @ $2.80 700 units @ $3.00 900 units @ $3.10 500 units @ $3.20 2,100 units @ $4.70 What is the amount of gross margin assuming the FIFO cost flow method is used? Multiple Choice $3,380 O $6,260 Activate Windows