challenge: What is the license under which the content from 'The Owl, The Scalper, The Taverner, Sleuth' is reused?
  
  A. Creative Commons Attribution-ShareAlike 3.0 Unported License
  B. Public Domain License
  C. Creative Commons Attribution-ShareAlike 2.0 Unported License
  D. GNU Free Documentation License (GFDL)
  Answer: 