$\backslash$table$[[$Cost Pool,Overhead Costs,Activity $-$ cost driver$],[$Materials handling,$$44,000,90,000$ orders$],[$Machine maintenance,$$400,000,15,000$ maintenance hours$],[$Setups$,$$$241,150,45,500$ setups$],[$Inspections$,$$$133,920,21,600$ inspections$],[$Total support costs,$$819,070,]]$

Production Estimates

Production units:

Regular $,=8,000,000$ units

Jumbo $,=16,000,000$ units

Machine$-$hours $,=200,000mh$

Labor$-$hours $,=400,000dlh$

Expected direct costs amounts to $$9,880,000$ for the period. Support cost requirements of both products are substantially different from one another. Canton uses an ABC costing system.

Which of the following statements is true of implementing an ABC system?

A$.$ The heterogeneous cost pools give managers greater confidence in the activity and product cost numbers from the ABC system.

B$.$ Managers should never compromise on the cause $-$ and $-$ effect relationship of cost drivers and costs.

C$.$ The three guidelines for refining costing systems should be ignored while implementing an ABC costing system.

D$.$ Identifying the cost $-$ allocation bases defines the number of activity pools into which costs must be grouped in an ABC system.