Indicate whether each of the following costs of an automobile manufacturer would be classified as direct materials, direct labour, or manufacturing overhead:

(a)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Windshield
(b)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Engine
(c)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Wages of assembly-line workers
(d)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Depreciation of factory machinery
(e)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Factory machinery lubricants
(f)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Tires
(g)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Steering wheel
(h)		select a type of manufacturing costs Direct MaterialsDirect LabourManufacturing Overhead		Salary of painting supervisor