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: Radiology
[{'content': "Champagne glass pelvic inlet is seen in \nSelect and explain. \nA. Cushing's syndrome, B. Addison's disease, C. Achondroplasia, D. Hypothyroidism", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Achondroplasia\n\nTrident hand\nChampagne glass pelvic inlet\nBullet vertebra.', 'role': 'assistant'}]