Question: What can I use in case of emergency if I don't have a candle?

  Options: 
 A. Use a crayon, light the end of a bit of the paper, it will burn for about 30 min, just set it on a large plate in case it falls over.
 B. Use a crayon to draw a picture of light on a bit of the paper, it will burn for about 30 min, just set it on a large plate in case it falls over.
Answer: A