How is mitochondrial DNA (mtDNA) typing used in forensic science? a) A suspect's mtDNA sample is matched to an unknown sample of nuclear DNA that was found at a crime scene.

b) A suspect's mtDNA sample is matched to an unknown sample of mtDNA that was found at a crime scene.

c) A suspect's nuclear DNA sample is matched to an unknown sample of nuclear DNA that was found at a crime a scene.

d) A suspect's nuclear DNA sample is matched to an unknown sample of mtDNA that was found at a crime scene.