1. Direct materials

2. Direct labor

3. manufactoring overhead

4. period cost

Determine whether each of the following is classified as: Assembly line workers' 1. wages Factory supervisors' salaries Steel used in 3. manufacturing product [ Select ] 2. > [ Select] 5. Insurance on office building Rivets and screws used in production Janitorial supplies for the office [Select] 6. [ Select] 8. Sales staff salaries [ Select)