It Would Be Most Accurate to Say of Early European

It would be most accurate to say of early European trading centers in Africa that

A) Europeans usually made more profit from the trading than did the African leaders.
B) the factories, as they were called, existed on all of Africa's coastlines.
C) there were no factories in the interior of the African continent.
D) white traders often accompanied the African leaders back to their homes in the interior to gather more goods.
E) most of the items Europeans purchased from Africans could have been bought elsewhere, but they were much cheaper in Africa.