Richard Wrangham's Study of Young Chimpanzees Led to the Startling

Richard Wrangham's study of young chimpanzees led to the startling conclusion that:

A) sometimes chimpanzees eat poisonous foods.
B) chimpanzees often overeat and gorge themselves on new leaves.
C) chimpanzees occasionally eat substances solely for medicinal benefit.
D) chimpanzees always eat the same foods and do not vary their diet.
E) chimpanzees frequently carry out extended fasts for health reasons.