Much like the Campeonato Brasileiro, teams within the reduce series, like B and C, might be promoted to the highest division yearly. In the case of Italy, only the leading three teams in Serie B are promoted to Serie A (in Brazil, promotion occurs for four teams in Serie B). https://soi-k-o-nh-c-i44310.answerblogs.com/37944779/what-is-serie-a-an-overview