Nikkel Corporation, a merchandising company, reported the following results for July $433,000 Sales Cost of goods sold (all varlable $175,900 Total variable selling expense Total fixed selling expense Total varlable administrative expense$10,500 Total fixed administrative expense $22,300 $22,500 $39,300 The gross margin for July is: O $224,300 O $162,500 O $371.200 O $257100