You Are Working in a Lab and Come Across a Gene

You are working in a lab and come across a gene, gene X, that you think might explain some of the differences seen between chimpanzees and humans. Which of the following results would support your hypothesis?

A) if gene X was active in humans and juvenile chimpanzees and inactive in adult chimpanzees
B) if gene X was active in humans and adult chimpanzees and inactive in juvenile chimpanzees
C) if gene X was active in adult humans and adult chimpanzees but inactive in juvenile humans
D) if gene X was active in juvenile humans, juvenile chimpanzees, and adult chimpanzees but inactive in adult humans