Indicate Whether Each of the Following Costs Is an Inventoriable

Indicate whether each of the following costs is an Inventoriable cost (I) or a Period cost (P):
1. depreciation on factory equipment
2. depreciation on treasurer's desk
3. direct materials
4. factory supplies
5. indirect labor
6. factory equipment repairs and maintenance
7. office supplies
8. advertising expense
9. depreciation on office equipment
10. direct labor
11. factory supervisor's salary
12. factory utilities
13. indirect materials
14. office salaries
15. sales commissions