In the Section "Investigating Life: What Makes Us Human?",what May

In the section "Investigating Life: What Makes Us Human?",what may explain why the genomes of humans and chimpanzees are so similar,yet our phenotypes are so different?

A) Humans and chimpanzees have almost all the same genes,but turn on and off different genes resulting in different phenotypes.
B) Most human genes are located in the noncoding regions,while most chimpanzee genes are located in the coding regions.
C) Most chimpanzee genes are located in the noncoding regions,while most human genes are located in the coding regions.
D) Human genes are transcribed more frequently than chimpanzee genes.
E) Human genes are translated more frequently than chimpanzee genes.