challenge: How many teams were promoted to the Campeonato Nacional for the 2019 season through the 2018 Primera B de Chile tournament?
  
  A. 2 teams earned automatic promotion, and 1 team earned promotion through playoffs
  B. 1 team earned automatic promotion, and 1 team earned promotion through playoffs
  C. 1 team earned automatic promotion, and no playoffs were held
  D. All 16 teams were promoted to the Campeonato Nacional
  Answer: 