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': 'Endodontics term was coined by \nSelect and explain. \nA. Dr Grossman, B. Dr Johnston, C. Dr G.V. Black, D. Dr Rochman', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]