The Amino Acid Sequences in Cytochrome C Were Determined for Chickens,ducks,and

The amino acid sequences in cytochrome c were determined for chickens,ducks,and humans.Scientists found a difference of 3 amino acids between chickens and ducks,and 13 differences between chickens and humans.Based on this information,one can conclude that

A) chickens are as closely related to humans as they are to ducks.
B) chickens are more closely related to ducks than they are to humans.
C) ducks are more closely related to humans than they are to chickens.
D) chickens are more closely related to humans than they are ducks.