Classify each of the following costs as either a product cost or a period cost for a manufacturer. 1. Wages paid to assembly line workers. Product cost
2. Indirect labor used in making goods. Product cost
3. Rent on factory building. Product cost
4. Direct materials used in making goods. Product cost
5. Office building insurance used up. Period cost
6. Factory manager's salary. Product cost
7. Administrative expenses. Period cost
8. Salesperson salary. Period cost