The Van de Graaff generator works by creating static electricity using rubber bands that move over a piece of felt charging the ball that the person touches. Explain how this happens?

A: The positive charge of the ball and the negative charge of your hair attract each other.
B: The positive charge of the ball and the positive charge of your hair repel each other.
C: The negative charge of the ball and the negative charge of your hair attract each other.

A: The positive charge of the ball and the negative charge of your hair attract each other.