Other Animals, Including Chimpanzees, Have Culture, but Their Culture Is

Other animals, including chimpanzees, have culture, but their culture is limited relative to the human version. Why?

A) Because cultural transmission serves no particular evolutionary advantage in chimpanzees
B) Because we are more adept at learning and at imitation than other species
C) Because cultural evolution cannot occur in species other than our own
D) Because chimpanzees are limited to forest habitats where cultural improvement is disadvantageous.