Indicate whether each of the following cost of an automobile manufacturer would be classified as direct materials, direct labor, or manufacturing overhead.

(a) ___ Windshield

(b) ___ Engine

(c) ___ Wages of assembly line worker

(d) ___ Depreciation of factory machinery

(e) ___ Factory Machinery lubricants

(f) ___ Tires

(g) ___ Steering wheel

(h) ___ Salary of painting supervisor