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: Forensic Medicine
[{'content': 'Brown colored urine is seen in the - \nSelect and explain. \nA. Nitric acid poisoning, B. Carbolic acid poisoning, C. Sulphuric acid poisoning, D. Hydrochloric acid poisoning', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]