Leaf Corporation uses a job-order costing system with a single plantwide predetermined overhead rate based on machine-hours. The company based its predetermined overhead rate for the current year on total fixed manufacturing overhead cost of $117,000, variable manufacturing overhead of $2.00 per machine-hour, and 30,000 machine-hours. The company has provided the following data concerning Job P978 which was recently completed: Number of units in the job 20 Total machine-hours 80 Direct materials $ 500 Direct labor cost $2,640 The predetermined overhead rate is closest to: Multiple Choice $3.90 per machine-hour O $2.00 per machine-hou O $5.90 per machine-hour O ) $4.90 per machine-hour