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: Pediatrics
[{'content': 'True about dentition - \nSelect and explain. \nA. Hypothyroidism causes delayed dentition, B. Premolar is not seen in primary dentition, C. 3rd molar is the last to appear in secondary dentition, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e., Hypothyroidism causes delayed dentition; 'b' i.e., Premolar is not seen in primary dentition; 'c' i.e., 3rd molar is the last to appear in secondary dentition", 'role': 'assistant'}]