The controller for Wofford Machining has established the following overhead cost pools and cost drivers: Order no. 715 has the following production requirements: Machine setups: 7 Raw material: 11,200 units Inspections: 16 Machine hours: 850 Required: A. Compute the total overhead that should be assigned to order no. 715 by using activity-based costing. B. Suppose that Wofford were to use a single, predetermined overhead rate based on machine hours. Compute the rate per hour and the total overhead assigned to order no. 715. C. Discuss the merits of an activity-based costing system in comparison with a traditional costing system.