During the month of May, Bennett Manufacturing Company purchased $43,000 of raw materials. The manufacturing overhead totaled $27,000 and the total manufacturing costs were $106,000. Assuming a beginning inventory of raw materials of $8,000 and an ending inventory of raw materials of $6,000, direct labor must have totaled:
a. $34,000.
b. $38,000.
c. $36,000.
d. $45,000.