How Did the Topography of the Andean Region Influence the Development

How did the topography of the Andean region influence the development of civilization?

A) The unsuitability of the Andean region for any form of agriculture limited the development of civilizations there.
B) The existence of pastoral nomadism in the Andean region led to an impermanent population base, as on the fringes of Asian and Mediterranean civilizations.
C) The arid coastal valleys demanded irrigation, and this spurred population growth and social complexity leading to the development of civilizations as in the early river -valley civilizations of Asia and the Middle East.
D) The many flat plains provided ample opportunities for widespread development of sedentary agricultural communities.