Which Statement Is Accurate About Homo Erectus and Homo Ergaster

Which statement is accurate about Homo erectus and Homo ergaster?

A) H. erectus evolved into H. ergaster and was supplanted by H. ergaster.
B) The fossils look very similar, but H. erectus is an Asian form and H. ergaster is the African form.
C) H. erectus essentially looks like a modern human, while H. ergaster is very apelike.
D) H. erectus and H. ergaster are identical, except that H. erectus had tools and fire, and H. ergaster did not.
E) H. erectus walked upright, whle H. ergaster still walked on all fours.