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': 'The most impoant sign of defloration is : \nSelect and explain. \nA. Enlarged nipple, B. Dilation of vaginal canal, C. Enlarged breasts, D. Ruptured Hymen', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Ruptured hymen', 'role': 'assistant'}]