GMAT Sentence Correction (SC) | Re: Elk now live almost solely in the Rocky Mountains, which

Elk now live almost solely in the Rocky Mountains, which would make it seem that elk are mountain dwellers, while they once ranged over virtually all of the continental United States except for a small strip in the extreme Southwest.

A. Elk now live almost solely in the Rocky Mountains, which would make it seem that elk are mountain dwellers, while
B. The fact that elk now live almost solely in the Rocky Mountains would make it seem that they are mountain dwellers, but
C. It would seem that elk