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': 'In oral poisoning with carbamate insecticides, .............................. may be hazardous: \nSelect and explain. \nA. Pralidoxime, B. Atropine, C. Magnesium sulfate purgative, D. Gastric lavage with activated charcoal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Oximes are ineffective in carbamate\xa0poisoning. Rather,\xa0these can worsen the poisoning due to weak anticholinesterase\xa0activity of its own.', 'role': 'assistant'}]