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': 'All the strains of A.A. Comitans are sensitive to: \nSelect and explain. \nA. Tetracycline, B. Ciprofloxacin, C. Augmenting, D. Metronidazole', 'role': 'user'}, {'content': 'Answer: B \nExplanation: If given :Ciprofloxacin+ metronidazole is the best option.', 'role': 'assistant'}]