The inventory records for Radford Co. reflected the following:

Beginning inventory @ May 1	1,300 units @ $4.20
First purchase @ May 7	1,400 units @ $4.40
Second purchase @ May 17	1,600 units @ $4.50
Third purchase @ May 23	1,200 units @ $4.60
Sales @ May 31	4,200 units @ $6.10

What is the amount of gross margin assuming the weighted-average inventory cost flow method? (Round your intermediate calculations to two decimal places.)

		$19,320
		$12,600
		$7,014
		$6,300
		None of the above.