Which of the following is a product cost? Select one: A. delivery van depreciation B. depreciation on office equipment C. CEO's salary D. factory supervisor's salary E. None of the above. Which of the following correctly describes the accounting for indirect labor costs? Select one: A. Indirect labor costs are expensed as incurred. B. Indirect labor costs are period costs and are expensed when the manufactured product is sold. C. Indirect labor costs are product costs and are expensed as incurred. D. Indirect labor costs are inventoried product costs and are expensed when the manufactured product is sold. O E. None of the above