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': 'Spermin is detected in semen by which test - \nSelect and explain. \nA. Barberio test, B. Florence, C. ELISA, D. Agglutination inhibition', 'role': 'user'}, {'content': "Answer: A \nExplanation: Barberio's test → Yellow coloured crystals of spermin picrate.\nFlorence test → 4 Brown crystals of choline periodide.", 'role': 'assistant'}]