The Number of Differences Between Cytochrome c of Humans and Cytochrome

Multiple Choice

The number of differences between cytochrome c of humans and cytochrome c of 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) Rhesus monkey, pigeon, fruit fly.
B) pigeon, Rhesus monkey, fruit fly.
C) pigeon, fruit fly, Rhesus monkey.
D) Rhesus monkey, fruit fly, pigeon.
E) fruit fly, pigeon, Rhesus monkey.