Listed below are costs of providing an airline service Classify each cost as (a) either variable or fixed, and (b) either direct or indirect by selecting the appropriate dropdowns. Consider the cost object to be a flight. Flight attendants and pilots are paid based on hours of flight time Cost Variable or Fixed Direct or Indirect 1. Maintenance on airplanes 2. Beverages served on planes 3. Insurance premium on airplanes 4. Regional vice president salary 5. Airport landing fee (per flight) 6. Fuel used in planes 7Luggage handler wages 8. Depreciation (straight-line) on ground equipment iable rect ixed ndirect iable ixed ixed Direct ndirect ndirect