ABC Calculations The controller for Bear Machining has established the following overhead cost pools and cost drivers: Overhead Cost Pool Budgeted Overhead Cost Cost Driver Budgeted Level of Cost Driver Machine setups $240,000$ # of setups $200$ Material handling $90,000$ Units of raw material $60,000$ Quality inspection $48,000$ # of inspections $1,200$ Other overhead $160,000$ Machine hours $20,000538,000$ Order # $715$ has the following production requirements: Machine setups $7$ Units of raw material $11,200$ Inspections $16$ Machine hours $850$ a$.$ Bear currently uses a single cost driver system to allocate overhead, with the driver being the number of setups. Compute the cost per setup and the total overhead assigned to order # $715.(6$ pts$)$ b$.$ Suppose Bear decides to switch to an activity$-$based cost system. Compute the overhead rate for each pool and determine the total overhead allocated to oder # $715.(8$ pts$)$ c$.$ Explain why an ABC costing system likely leads to a more accurate cost than a single$-$driver costing system. $(4$ pts$)$