challenge: In the Deutsches Derby, what happened in the 1875 and 1882 (and also 1893) races?
  
  A. A winner was declared by the drawing of lots
  B. A winner was declared after a rematch
  C. The races ended in a dead-heat, with joint winners (in 1882 and 1893) and a winner declared by agreement of the owners (in 1875)
  D. A winner was disqualified
  Answer: 