This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': "Latte's crust of blood stain is used to detect: NEET 14 \nSelect and explain. \nA. Nature of stain, B. Detection species, C. Blood group, D. Secretor status", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Blood group', 'role': 'assistant'}]