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: Gynaecology & Obstetrics
[{'content': 'A primipara who had a prolonged labour and difficult vaginal delivery three months ago presents with complains of incontinence of loose stools and flatus from the day of delivery. The most likely diagnosis : \nSelect and explain. \nA. Chronic diarrhoea, B. Recto-vaginal fistula, C. Haemorrhoids, D. Complete perineal tear', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Complete perineal tear', 'role': 'assistant'}]