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': 'Most  common position of hymen rupture in a virgin is \nSelect and explain. \nA. Anterior, B. Anterio - lateral, C. Posterio - lateral, D. Posterior', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hymen tears\n\nCongenital - Anterion\nIntercourse / foreign body - posterolateral\nIn a virgin, laceration of hymen occurs with the first intercourse\nThis is the principal evidence of intercourse in a virgin\nTearing of hymen usually occurs postero - laterally or in the middle.\n\nOther conditions causing ruptured hymen before coitus\n\nAccidents\nMastrubation\nInstrumentation by doctors\nArtifical dilatiation of vagina by foreign bodies for prostitution\nPassage of large blood clots.', 'role': 'assistant'}]