What is the significance of the household baptism in the book of Acts, such as the baptism of Lydia's household in Acts 16:15?

A It indicates that only adults were eligible for baptism in the early church. B It suggests the potential inclusion of children and servants within the covenant community, reflecting a family-based understanding of faith. C It was a symbolic act of cleansing the physical dwelling from pagan influences. D It primarily signified the head of the household's personal conversion experience.