Though the Veracity of His Account Is Subject of Debate,according

Though the veracity of his account is subject of debate,according to Herodotus,how did the Phoenicians circumnavigate Africa?

A) They had maps from the Sea Peoples to follow.
B) They invented a new kind of sail.
C) They traded cloth for food with African natives.
D) They planted and harvested grain along the coast.
E) They established trade outpost along the African coast.