Listed here are product costs for production of soccer balls. Classify each cost as either direct or indirect. Product Cost 1. Coolants for machinery 2. Wages of product assembly workers 3. Annual flat fee paid for factory security 4. Taxes on factory Direct or Indirect Indirect Direct Indirect Direct 5. Machinery depreciation (straight-line) Indirect 6. Rubber bladder interior for balls Direct 7. Factory building rent Indirect 8. Wages of factory machine operators Indirect 9. Wages of factory maintenance workers Indirect 10. Factory supervisor salary Indirect