Boxer Industries worked on four jobs during its first year of operation: nos. 401, 402, 403, and 404. A review of job no. 403's cost record revealed direct material charges of $40,000 and total manufacturing costs of $50,000. If Boxer applies overhead at 150% of direct labor cost, the overhead applied to job no. 403 must have been:

A. $0. B. $6,000. C. $4,000. D. $3,333. E. $5,000.