Rhome Corporation's relevant range of activity is 2,000 units to 6,000 units. When it produces and sells 4,000 units, its average costs per unit are as follows:

	Average Cost per Unit
Direct materials	$ 5.40
Direct labor	$ 3.55
Variable manufacturing overhead	$ 1.70
Fixed manufacturing overhead	$ 3.00
Fixed selling expense	$ 0.60
Fixed administrative expense	$ 0.40
Sales commissions	$ 1.00
Variable administrative expense	$ 0.40

If 5,000 units are sold, the variable cost per unit sold is closest to:

Select one:

a. $12.05

b. $16.05

c. $10.65

d. $13.65