2. Cox Company uses a job-order cost system and assigns overhead cost to jobs on a basis of direct labor hours. Manufacturing overhead cost and direct labor hours were estimated at $120,000 and 40,000 hours, respectively, for 2018. In July 2018, Job # 334 was completed at a cost of $10,000 in direct materials and $12,000 in direct labor. The labor rate is $20 per hour. By the end of 2018, Cox Company reported actual work of 38,000 direct labor hours and had incurred $109,000 in actual manufacturing overhead cost. a. Calculate the total per unit cost of Job # 334 which contained 50 units. b. Calculate Cox's under or overapplied overhead for 2018. c. Describe what is causing the under or overapplied overhead.