On march 12, klein company, inc. sold merchandise in the amount of $7,800 to babson company, with credit terms of 2/10, n/30. the cost of the items sold is $4,500. klein uses the perpetual inventory system. on march 15, babson returns some of the merchandise. the selling price of the merchandise is $600 and the cost of the merchandise returned is $350. babson pays the invoice on march 20, and takes the appropriate discount. the amount that klein receives from babson on march 20 is: $7,800. $7,644. $7,044. $7,056. $7,200.