In the book of Acts, what was the key theological significance of Peter's visit to Cornelius's household?

A It demonstrated Peter's ability to speak multiple languages. B It marked a pivotal moment in the early church's understanding of God's acceptance of Gentiles, breaking down cultural and religious barriers. C It was primarily a demonstration of Peter's authority as the leader of the apostles. D It signified the beginning of the construction of new churches in Gentile territories.