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: Dental
[{'content': 'Number of teeth present in the oral cavity at the age between 8-9 years: \nSelect and explain. \nA. 12 teeth., B. 20 teeth., C. 24 teeth., D. 28 teeth.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 24 teeth are present that is 12 primary and12 permanent teeth.', 'role': 'assistant'}]