Homo Floresiensis ("The Hobbit")has Been Interpreted as Either a Distinct

Homo floresiensis ("The Hobbit") has been interpreted as either a distinct and new species of the genus Homo,or an instance of Homo sapiens with an abnormality resulting in distinct features just in that individual. Which of the following is evidence that supports the former interpretation?

A) the fact that although the cranial capacity of this specimen is small,it is within the range of modern humans
B) the presence of several features,including a small or absent chin and rotted premolars,that links the specimen to modern populations living in the region today
C) DNA evidence showing a close relationship between this specimen and nearby Homo erectus remains
D) the presence of a much earlier fossil from the same region,with similar morphologies,suggesting a long period of evolution at this locality,of this species