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: Forensic Medicine
[{'content': 'A child at the age of 7 years has how many teeth: \nSelect and explain. \nA. 16, B. 20, C. 24, D. 28', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. 24', 'role': 'assistant'}]