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': 'Dystocia dystrophia syndrome: \nSelect and explain. \nA. Android pelvis, B. Platypelloid pelvis, C. Anthropoid, D. Gynaecoid pelvis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]