Indicate for each of the following costs whether it is a product cost or a period cost.

1. Cost of grapes purchased by a winery.

2. Depreciation on pizza ovens in a pizza restaurant.

3. Cost of plant manager's salary in a computer production facility.

4. Wages of security personnel in a department store.

5. Cost of utilities in a manufacturing facility.

6. Wages of aircraft mechanics employed by an airline.

7. Wages of drill-press operators in a manufacturing plant.

8. Cost of food in a microwavable dinner.

9. Cost incurred by a department store chain to transport merchandise to its stores.