Fossils of Australopithecus Afarensis Are Particularly Significant Because

Fossils of Australopithecus afarensis are particularly significant because

A) they show that humans evolved in Asia rather than Africa.
B) they are the oldest hominin fossils yet found in the New World.
C) Au. afarensis remains are the oldest to be found in association with evidence of both stone tools and fire use.
D) they comprise the first fossil evidence to confirm that bipedalism preceded the evolution of a humanlike brain.
E) they show that the gracile australopithecines were not hominins after all.