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 component of D.M.F. index mostly likely to give false\nscores \nSelect and explain. \nA. D- Component, B. M- Component, C. F- Component, D. All usually', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]