an Which types of overhead allocation methods result in the use of more than one overhead rate during the same time period? Select one: O a. Activity-based costing and plantwide overhead rate method. O b. Departmental overhead rate method and activity-based costing. O c. Cost pool overhead rate method and plantwide overhead rate method. Od. Plantwide overhead rate method and departmental overhead rate method. Oe. Departmental overhead rate method and cost pool overhead rate method. Successful adoptions of activity-based costing typically occur when companies rely heavily on: Select one: O a. manufacturing personnel. O b. office personnel. Oc accounting personnel. O d. finance personnel. Oe. None of the given answer.