What Have Researchers Learned by Looking at the Molars and Other

What have researchers learned by looking at the molars and other cranial features of H. erectus, such as a supraorbital torus and an occipital bun?

A) H. erectus was more dependent on tubers than earlier hominins.
B) H. erectus was more dependent on hunting-and the lifestyle it demanded-than were earlier hominins.
C) The chewing apparatus of H. erectus was essentially the same as that of H. habilis.
D) The paucity of dental remains of H. erectus has made it difficult for researchers to say anything significant.
E) H. erectus had yet to make the shift to hunting seen later on with Neandertals.