Brief Exercise 14-04 Your answer is partially correct. Try again. Indicate whether each of the following costs of an automobile manufacturer would be classified as direct materials, direct labor, or manufacturing overhead. . Windshield. (a) Direct Labor Engine. (b) Direct Materials (c) Manufacturing Overhead : Wages of assembly line worker Depreciation of factory machinery . (d) Direct Labor Factory machinery lubricants (e) Direct Materials + Tires. () Direct Materials . Steering wheel Direct Labor Salary of painting supervisor. th ) Direct Materials Click if you would like to Show Work for this question: Open Show Work