The Kingdom of Axum,the Modern-Day Ethiopia,was Unusual in Africa,in That

The kingdom of Axum,the modern-day Ethiopia,was unusual in Africa,in that its people

A) were quick converts to Islam.
B) became heavily involved with Arab traders by the 7th century.
C) believed that their kings were tied to biblical lines of descent.
D) maintained the strongest presence along the Nile through the 12th century.
E) managed to convert their Egyptian neighbors to Islam.