challenge: What was the response of the Insurgent Army's Military Revolutionary Council to the offer of mediation by a member of the Left Socialist-Revolutionaries from Oleksandrivsk?
  
  A. They accepted the offer and began negotiations with the Bolshevik government
  B. They rejected the offer and insisted on fighting the Whites as an independent force
  C. They proposed a different mediator
  D. They requested more information before making a decision
  Answer: 