Listed here are product costs for production of soccer balls. Classify each cost as either direct or indirect. Product Cost 1. Wages of factory maintenance workers 2. Factory utilities 3. Factory supervisor salary 4. Ink for labeling soccer balls 5. Leather covers for soccer balls 6. Annual flat fee paid for factory security 7. Coolants for machinery 8. Wages of product assembly workers 9. Rubber bladder interior for balls 10. Wages of factory machine operators Direct or Indirect