One Fairly Complete Skull, One Large Mandible, and Two Partial

One fairly complete skull, one large mandible, and two partial skulls were found in the 1990s at the Dmanisi site in the former Soviet Republic of Georgia. Dated to 1.77 to 1.7 m.y.a., these fossils

A) suggest a slow spread of early Homo out of Africa and into Eurasia.
B) established an undisputed new species, H. rudolfensis.
C) are older than the fossils of the Nariokotome boy found in Kenya.
D) suggest a rapid spread, by 1.77 m.y.a., of early Homo out of Africa and into Eurasia.
E) exhibit no anatomical diversity, unlike the variable anatomically modern humans.