challenge: What is a characteristic of a Table canon in music?
  
  A. It is a type of canon that requires three or more musicians
  B. It is a type of canon that is meant to be read in the same direction by multiple musicians
  C. It is a retrograde and inverse canon meant to be placed on a table in between two musicians
  D. It is a type of canon that requires a conductor to lead the musicians
  Answer: 