Callaham 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 $115.80 per unit.
Sales volume (units)
4,000 5,000
Cost of sales $338,000 $422,500
Selling and administrative costs $89,600 $106,000
The best estimate of the total variable cost per unit is
A. $100.90.
B. $106.90.
C. $105.70.
D. $84.50.