1. If management wants the most accurate product cost, which of the following costing methods should be used? Volume based costing using a plantwide overhead rate. Normal costing using a plantwide overhead rate. Activity based costing. Volume-based costing using departmental overhead rates. 2. Which costing method tends to overstate the cost of high volume products? O Differential costing. Traditional volume-based costing, O Job order costing Activity based costing 3. Disadvantages of activity-based costing include It is not acceptable under GAAP for external reporting It can be costly to implement. It can be used in activity based management It is not acceptable under GAAP for external reporting and it can be costly to implement