USE THE FOLLOWING INFORMATION FOR QUESTIONS 18 AND 19. Xerox Corporation, a merchandising company, reported the following results for January: Sales........ Cost of goods sold..... $433,000 $173,000 Total variable selling expense............. $18,000 Total fixed selling expense..... $9,900 Total variable administrative expense. $10,000 Total fixed administrative expense..... $25,600 Note: Cost of goods sold is a variable expense. Xerox's gross margin for January was: $397,000 $196,000 $260,000 $232,000 19 1 point Xerox's contribution margin for January was: 000 $232,000 $196,500 $369,500