What Did the European Countries Colonizing Africa Envision for Their

What did the European countries colonizing Africa envision for their colonies?

A) Places to which they could re-settle their excess population.
B) Sources of great wealth that would help them to balance their economies.
C) Places from which they could obtain household servants, since most of theirs had taken jobs in the factories.
D) Good sources from which they could obtain much needed mineral resources.
E) Areas where they would at least break even by implementing cash cropping.