A car manufacturer incurs the following costs. Classify each cost as either a product or period cost. If a Exercise 18-6 product cost, classify it as direct materials, direct labor, or factory overhead. If a period cost, classify it as a Classifying product and selling expense or a general and administrative expense. Place an "*" in the correct column for each cost. period costs C2 Product Costs Period Costs Direct Factory Selling General and Overhead Expense Administrative Expense 1. Factory electricity 2. Advertising. 3. Depreciation on factory machine 4. Batteries for electric cars 5. Office supplies used 6. Wages to assembly workers Direct Materials Cost Labor 7 Salesperson commissions 8. Steel for cars 9. Depreciation on office equipment 10. Leather for car seats