challenge: Which two teams were promoted to the top division (A PFG) at the end of the 2012-2013 season?
  
  A. Neftochimic Burgas and Beroe Stara Zagora
  B. Neftochimic Burgas and Lyubimets
  C. Lyubimets and Lokomotiv Plovdiv
  D. Cherno More Varna and Botev Plovdiv
  Answer: 