The Number of Differences Between Human Cytochrome C and Cytochrome

The number of differences between human cytochrome c and cytochrome c of some other organisms is as follows: rhesus monkey - 1 difference; pigeon - 12 differences; fruit fly - 24 differences.The order in which these species are most similar to humans is

A) fruit fly, pigeon, rhesus monkey.
B) rhesus monkey, pigeon, fruit fly.
C) pigeon, rhesus monkey, fruit fly.
D) rhesus monkey, fruit fly, pigeon.
E) pigeon, fruit fly, rhesus monkey.