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': 'Pralidoxime is not useful in poisoning with - \nSelect and explain. \nA. Edrophonium, B. Malathion, C. Parathion, D. DFP', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Oximes (e.g. pralidoxime) are not used in carbamates poisoning (edrophonium is a carbamate).', 'role': 'assistant'}]