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': 'milk teeth - Total no. in a human being- \nSelect and explain. \nA. 20, B. 32, C. 28, D. 24', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]