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': 'Low fusing metal alloys was introduced by \nSelect and explain. \nA. Claude Mouton, B. Jean Darcet, C. Pierre Fauchard, D. Nicholas Chamant', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]