challenge: What was the outcome of the ADCC Submission Wrestling World Championship 'Superfight' between Ricardo Libório and Mario Sperry?
  
  A. Sperry won by points after 10 minutes
  B. The fight ended in a draw
  C. Libório was awarded the decision after 20 minutes and two overtime periods
  D. Libório won by submission in the first round
  Answer: 