In the Past, Neanderthals Were Usually Written Off as a 'Nonhuman

In the past, Neanderthals were usually written off as a 'nonhuman' or 'subhuman' species. What is one fact that (along with other evidence) indicates otherwise?

A) Neanderthals left Africa before Homo sapiens.
B) Neanderthals developed robust features to adapt to colder climates.
C) Skeletal evidence suggests that Neanderthals had a much higher cranial capacity than modern humans.
D) Neanderthals buried symbolically important objects with their dead.
E) The Neanderthal genome is identical to the modern human genome.