Question: How can you use banana peels on your teeth?

  Options: 
 A. Simply peel a ripe banana, and rub your teeth with the insides of the peel for about two minutes. After three weeks, your teeth will have whitened. Banana peel can act as a gentle exfoliator for your teeth.
 B. Simply peel a ripe banana, and rub your teeth with the outside of the peel for about two minutes. After three weeks, your teeth will have whitened. Banana peel can act as a gentle exfoliator for your teeth.
Answer: A