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': 'Which of the following is used in forgeries as an ink remover solution : \nSelect and explain. \nA. Sulphuric acid, B. Nitric acid, C. Carbolic acid, D. Oxalic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Oxalic acid', 'role': 'assistant'}]