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: Pathology
[{'content': "Delayed dentition with multiple supernumerary teeth is seen in \nSelect and explain. \nA. Hypoparathyroidism, B. Cleidocranial dysplasia, C. Pierre Robin Syndrome, D. Mongolism (Down's Syndrome)", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]