lacob 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 $162.00 per unit. Sales volume (units) Cost of sales Selling and administrative costs 13,900 15,490 $1,139,800 $1,270, 180 $ 652,000 $ 685, 390 The best estimate of the total contribution margin when 14,370 units are sold is: Multiple Choice $961,860 $847,830 $283,470