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': 'Remnant cysts are typically located in which wall of vagina \nSelect and explain. \nA. Posterior wall, B. Antero-lateral wall, C. Lateral wall, D. Apex of vagina', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Remnant cysts are typically located in antero-lateral wall of vagina.', 'role': 'assistant'}]