The Transcription Factor FOXP2 Has Two Mutations in Humans That

The transcription factor FOXP2 has two mutations in humans that are not found in chimps.This transcription factor regulates the expression of genes that allow humans to speak.This is consistent with which hypothesis to account for the differences between humans and chimps?

A) After the divergence of chimps and humans, changes in the human lineage caused some genes to stop working.
B) Human and chimp proteins are essentially the same, but are turned on and off at different times.
C) Humans and chimps do not share many genes in common.
D) Most differences between human and chimp DNA sequences are in the regions that code for proteins.
E) Humans are more evolved than chimps.