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: Pharmacology
[{'content': 'Ethambutol is safer in patient of: \nSelect and explain. \nA. Liver disease, B. Kidney disease, C. Gout, D. Both 1 and 2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All first line drugs used against M.Tuberculosis are hepatotoxic except Ethambutol. But it requires dose adjustment in renal failure.', 'role': 'assistant'}]