All of the Following Is True About Early Settlers in the Rainforests

All of the following is true about early settlers in the rainforests of the Caribbean islands EXCEPT:

A) They formed agricultural settlements as early as 500 BCE.
B) They built villages and terraces to grow manioc.
C) Artisans made ceramics in the shapes of animals, hinting at a shamanic religion
D) They generally avoided contact with the mainland, perhaps from fear of invasion.