Hi I need help with the following question

Nikkel Corporation, a merchandising company, reported the following results for July:

Sales$500,000Cost of goods sold (all variable)$170,700Total variable selling expense$24,600Total fixed selling expense$21,500Total variable administrative expense$10,000Total fixed administrative expense$34,900

The contribution margin for July is:

$443,600

$238,300

$329,300

$294,700