Similar to the Campeonato Brasileiro, teams in the lower series, such as B and C, can 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 happens for four groups in https://k-o-nh-c-i-tv18406.newsbloger.com/38340580/considerations-to-know-about-what-is-serie-a