Tolden Marketing Inc, a merchandising company reported sales of $2.861,800 and cost of goods sold of 51.492.400 for December. The company's total variable selling expense was 577.900: its total fored selling expense was 570.600: its total variable administrative expense was 598,400 and its total fored administrative expense was 5193,400. The cost of poods sold in this company is a variable cost. The gross margin for December O A 51.193.100 OB. 5929.100 OC 51.369,400 OD 52.597.300