Compared to the departmental overhead rate method, the plantwide overhead rate method usually results in more accurate overhead allocations. T/F 10. T/F 11. The use of a plantwide overhead rate is not acceptable for external reporting under GAA ABC allocates overhead costs to products based on input measures rather than output measures T/F 12. ABC is significantly less costly to implement and maintain than more traditional overhead costing systems. T/F 13. T/F 14. When using the plantwide overhead rate method, total budgeted overhead costs are combined into one overhead cost pool. The departmental overhead rate method traces costs to each department and then determines an allocation base for each department. T/F 15. Activity-based costing involves four steps: (1) identify activities and the costs they cause, (2) group similar activities into cost pools, (3) determine an activity rate for each activity cost pool, and (4) allocate overhead costs to products using those activity rates. T/F 16