challenge: What role did Ivan Zarutsky play in the Bolotnikov Uprising and the events that followed?
  
  A. He remained neutral and did not take part in the conflict
  B. He joined forces with Ivan Bolotnikov to fight against the Polish king
  C. He led the army against False Dmitri II
  D. He supported False Dmitri II and the Polish king Sigismund III Vasa
  Answer: 