Many Victims Are Bitten During an Attack

Many victims are bitten during an attack.What is the primary significance of a bite mark to the investigator?

A) Can provide the M.O. of the perpetrator.
B) Can provide sites for DNA collection of saliva from the suspect which can lead to the identification of the suspect.
C) Can aid in deciding what charges to apply when the suspect is arrested.
D) Can aid in determining whether or not the suspect should be charged as a sexual criminal.