What is a distinguishing feature of Agabus's prophecies as recorded in the Acts of the Apostles?

A Agabus's prophecies were specifically related to events affecting the early Christian community. B Agabus's prophecies were accompanied by miraculous signs as proof. C Agabus's prophecies were focused on long-term events impacting the entire world. D Agabus's prophecies were delivered through visions and dreams, unlike Old Testament prophets.