This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trace evidences, Subject name: Forensic Medicine
[{'content': 'Which of the following is used to differentiate race in seminal stains? \nSelect and explain. \nA. Serum alkaline phosphatase, B. MHS 5, C. Peptidase A, D. Choline', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Enzyme Typing: Enzyme markers commonly used in genetic profiling of semen are phosphoglutamase (PGM) and peptidase (Pep A). Pep A is polymorphic in many racial groups and is commonly employed as a racial discriminator. PGM is polymorphic in all populations and can be subdivided into 10 distinct subgroups.', 'role': 'assistant'}]