Fossils of Thrinaxodon, a Species That Lived During the Triassic

Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. Thrinaxodon may have been endothermic (able to generate its own internal heat) . Which of the following statements is likely most accurate about Thrinaxodon?

A) Fossils found in a given area look like the modern species in that same area.
B) The environment where Thrinaxodon lived was very warm.
C) Mammals evolved from a relative of Thrinaxodon.
D) Antarctica and South Africa separated before Thrinaxodon evolved.