Back then, the answer would be A. But, if this was a MODERN question, the answer would be D.
Answer:
They own all the agricultural and mining land. The remaining land owned by black people is lar. The land is, by far, the most important benefit white South Africans gained from colonialism and apartheid.
Explanation:
https://www.quora.com/How-have-white-South-Africans-benefited-from-colonialism-and-apartheid
The land was rugged containing Andes mountains, the coastline deserts, and the Amazon jungle. They eventually found solutions for their geographic problems. I hope this helps :)