This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'The least common type of female pelvis is \nSelect and explain. \nA. Gynecoid, B. Android, C. Anthropoid, D. Platypelloid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .', 'role': 'assistant'}]