The following cost information pertained to the Violin Division of Stringing Music Co. and was based on monthly demand and sales of 100 units: Per-Unit Costs Variable production costs:
Direct materials $140
Direct labor 170
Variable factory overhead 80
Fixed production costs:
Depreciation (equipment) 40
Factory rent 68
Other 16
Total production cost $514
Variable selling & administrative costs $24 per unit
Fixed selling & administrative costs $36 per unit

Assume that the Violin Division was evaluating whether or not it would accept a special sales order for 10 violins at $390 per unit. For this purpose, total relevant cost per unit (given the costs stated above) is:

a. $330
b. $342
c. $390
d. $366
e. $354