Similar to the Campeonato Brasileiro, groups while in the reduce series, including B and C, might be promoted to the top division every year. In the case of Italy, only the leading 3 groups in Serie B are promoted to Serie A (in Brazil, marketing occurs for 4 teams in https://holdenbtjyo.theblogfairy.com/36643203/what-is-serie-a-can-be-fun-for-anyone