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

(a) ______ Windshield.

(e) ______ Factory machinery lubricants.

(b) ______ Engine.

(f) ______ Tires.

(c) ______ Wages of assembly line worker. (g) ______ Steering wheel.

(d) ______ Depreciation of factory machinery. (h) ______ Salary of painting supervisor.

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