QS 04-6 Advantages of plantwide and departmental rate methods LO A1 Which of the following are advantages of the plantwide and departmental overhead rate methods? Indicate advantages with A and disadvantages with D. 1. They are based on readily available information. 2. They can be used for external financial reporting. 3. Overhead costs are too complex to be explained by only one factor. 4. They violate GAAP. 5. They are easy to implement