Last year, Barnard Company incurred the following costs: direct materials, $50,000; direct labor, $20,000; manufacturing overhead, $130,000; selling expense, $40,000; administrative expense, $36,000.
Barnard produced and sold 10,000 units at a price of $31 each.
Refer to the information for Barnard Company above.

Prime cost per unit is :

a. $7.00

b. $20.00

c. $15.00

d. $5.00

e. $27.60