Ladanza Corporation is a wholesaler that sells a single product. Management has provided the following cost data for two levels of monthly sales volume. The company sells the product for $141.00 per unit.

Sales volume (units)	9,700	11,030
Cost of sales	$834,200	$948,580
Selling and administrative costs	$717,000	$742,270

The best estimate of the total contribution margin when 10,370 units are sold is:

$487,350

$175,870

$373,320

$259,900