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 2,000 units @ $5.60 2,100 units @ $5.80 2,300 units @ $5.90 1,900 units @ $6.00 6,300 units @ $7.50 What is the amount of gross margin assuming the weighted average cost flow method is used? (Round your intermediate calculations to 2 decimal places.) Multiple Choice $37,800 $9,450 $10,521 $27,720