classifying Cosas Materials, Labor or Factory Overhead Indicate whether each of the following costs of an automobile manufacturer would be direct materials cost direct labor cost, or factory ove costi Cost Classification *. Automobile engine b. Brake pads Depreciation of robotic assembly line equipment d. Glass for front and rear windshields e. Safety helmets and masks for assembly line workers f. Salary of quality control inspector 9. Steering wheel h. Tires i. Waes embly ine workers Check My Week