Perteet Corporation's relevant range of activity is 3,000 units to 7,000 units. When it produces and sells 5,000 units, its average costs per unit are as follows:
Average Cost per Unit
Direct materials $6.70
Direct labor $3.25
Variable manufacturing overhead $1.60
Fixed manufacturing overhead $3.00
Fixed selling expense $0.70
Fixed administrative expense $0.40
Sales commissions $0.50
Variable administrative expense $0.55
If 4,000 units are produced, the total amount of manufacturing overhead cost is closest to:__________
a. $28,000
b. $14,800
c. $21,400
d. $18,100