Vincent Sarich and Allan Wilson estimated that humans diverged from their closest living primate relatives about 5 million years ago.What line of evidence did they use initially?

A) cladistic analysis of DNA sequences from living primates
B) chromosomal banding patterns, fusions, and fissions
C) radiometric dating of fossils
D) DNA denaturation and re-annealing temperatures
E) reactions between primate serum proteins and antibodies to human serum