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': 'The term "Serial extraction" was coined by \nSelect and explain. \nA. Kjelgren, B. Robert Bunon, C. Joseph Fox, D. Hotz', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]