Searls Corporation, a merchandising company, reported the following results for July: Number of units sold 2,700 units Selling price per unit $664 per unit Unit cost of goods sold $405 per unit Variable selling expense per unit $48 per unit Total fixed selling expense $56,500 Variable administrative expense per unit $13 per unit Total fixed administrative expense $118,200 Cost of goods sold is a variable cost in this company. The gross margin for July is: $534.600 $699.300 $1,618,100 $359,900