What are three advantages of activity-based costing over traditional volume-based allocation methods? Select one: a. none of the given answer. b. Ease of use, more accurate product costing, and more effective cost control. c. More accurate product costing, more effective cost control, and better focus on the relevant factors for decision making. d. More accurate product costing, fewer cost objects, and a direct correlation to production volume. e. Fewer allocation bases, ease of use, and a direct correlation to production volume. Which types of overhead allocation methods result in the use of more than one overhead rate during the same time period? Select one: a. Cost pool overhead rate method and plantwide overhead rate method. b. Departmental overhead rate method and cost pool overhead rate method. c. Activity-based costing and plantwide overhead rate method. d. None of the given answer. e. Plantwide overhead rate method and departmental overhead rate method.