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Students rub air-filled balloons on their hair and then touch the charged balloons to the ceiling. The balloons initially stick to the ceiling but after some time eventually fall back down. Which of the following claims best describes the physical processes responsible for these observations?

The balloons induced charge separation in the ceiling, resulting in an attractive force. Over time, conduction of electrons into the air reduced the net charge of the balloons.
The balloons induced charge separation in the ceiling, resulting in an attractive force. Over time, the air induced charge separation in the balloons, reducing the net charge of the balloons.
Electrons moved by conduction from the balloons to the ceiling, resulting in an attractive force. Over time, conduction of electrons into the air reduced the net charge of the balloons.
Electrons moved by conduction from the balloons to the ceiling, resulting in an attractive force. Over time, the air induced charge separation in the balloons, reducing the net charge of the balloons.

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