Question: How can you keep a brass ring from turning your finger green?

  Options: 
 A. Take the ring and place it on a piece of cardboard. Use white nail polish and paint the inside of the ring with it. Allow to dry for an hour before wearing.
 B. Take the ring and place it on a piece of cardboard. Use clear nail polish and paint the inside of the ring with it. Allow to dry for an hour before wearing.
Answer: B