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': 'A 10-year-old female patient diagnosed as a case of Down’s syndrome have all of the  \nfollowing dental problems which are usually associated with it, except: \nSelect and explain. \nA. Retarded eruption, B. Late shedding of deciduous teeth, C. Hypodontia, D. Microdontia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]