Question: How can you make a floating shelf?

  Options: 
 A. Use a simple metal bookend (one that is a 360 degree angle only and metalic) Drill a pair of holes into one angle, screw to a wall and set books upon it.
 B. Use a simple metal bookend (one that is a 90 degree angle only and metalic) Drill a pair of holes into one angle, screw to a wall and set books upon it.
Answer: B