help please

1. Identify the costs as one of the following expenses. Answer with the correct letter at the blank provided: a. Direct labor b. Direct materials c. Factory overhead d. Not a product cost 1. Factory depreciation 2. President's salary 3. Salesmen commissions 4. Wood 5. Factory supervisor's salary 6. Assembler's wages 7. Plastic parts 8. Finished goods warehouse rent 9. Machine operator 10. Maintenance Supplies