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': 'Pralidoxime is ineffective in case of which poisoning ? - \nSelect and explain. \nA. Organophosphorous, B. Carbaryl, C. Both, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Carbaryl o Oximes are contraindicated in carbamates poisoning (carbaryl is a carbamate).", 'role': 'assistant'}]