Nikkel Corporation, a merchandising company, reported the following results for July $490,000 Sales Cost of goods sold (all $169,700 variable) Total variable selling expense $24,200 Total fixed selling expense $21,700 Total variable administrative $13,200 expense Total fixed administrative $33,600 expense The contribution margin for July is: Multiple Choice $227.600 $320,300 $282.900 $434,700