After position all actual factory overhead and applying factory overhead to production departments in a process costing system: A method of assigning overhead costs to a product using a single overhead rale is Which types of overhead allocation methods result the use of more than one overhead rate during the same period? Plantwide overhead tate method and departmental overhead rate method. Overhead costs: Cannot be .raced to units of product in the same way that direct labor can. Are period costs. Include only fixed costs