During the investigation of a murder case, the police found a few bloodstains on the body of the victim, a few bloodstains on the wall nearby and a few hair follicles by the victim. How could this evidence be used to identify the murderer?

A by matching both blood samples (from the wall and from the victim) to the DNA of the victim

B. by matching both blood samples (from the wall and from the victim) to the police database of DNA profiles of convicted
offenders

C. by matching the DNA in the hair follicles and in both blood samples (from the wall and from the victim) to that of the victim
and to the DNA database of convicted offenders