The sustainment mission in an area defense requires a careful balance between forward positioning of supplies and maintaining responsiveness and rapid mobility to ensure survivability of sustainment assets. The area defense typically requires the following: A. Less fuel consumption, less time for maintenance repair, and more complex casualty evacuation. B. Less fuel consumption, more time for maintenance repair, and less complex casualty evacuation. C. More fuel consumption, less time for maintenance repair, and more complex casualty evacuation