What is the historical and theological significance of the Ethiopian eunuch's baptism by Philip in Acts 8:26-40, regarding the expansion of the early Christian church?

A It demonstrated that baptism was only for those of Jewish descent. B It signified the early church's acceptance of individuals from diverse ethnic and social backgrounds, challenging traditional notions of inclusion and purity within the Jewish community. C It highlighted the importance of literacy in understanding the scriptures. D It established a precedent for the ordination of eunuchs as church leaders.