When Comparing Certain Amino Acid Sequences in the Protein Hemoglobin

When comparing certain amino acid sequences in the protein hemoglobin of humans to those of other animals, scientists found that baboons had 7 amino acids that were different than the human protein, dogs had 10 amino acids that were different than the human protein, gorillas had 1 amino acid that was different than the human protein, and lemurs had 8 amino acids that were different than the human protein. Which of these animals is most closely related to humans?

A) baboon
B) dog
C) lemur
D) gorilla