Just like the Campeonato Brasileiro, groups inside the reduced series, including B and C, may be promoted to the top division every year. In the situation of Italy, just the prime 3 teams in Serie B are promoted to Serie A (in Brazil, promotion comes about for 4 teams in https://t-l-k-o-nh-c-i49369.blogproducer.com/45097683/detailed-notes-on-what-is-serie-a