challenge: What was Ukraine's previous experience in hosting Olympic events before bidding for the 2022 Winter Olympics?
  
  A. Participating in the 1992 Summer Olympics as an independent nation
  B. Hosting the 1972 Summer Olympics in Kyiv
  C. Holding several football matches in Kyiv during the 1980 Summer Olympics
  D. Organizing the 1964 Winter Olympics in the Carpathian Mountains
  Answer: 