This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Cholinesterase activators a useful for the treatment of which poisoning \nSelect and explain. \nA. Paraquat, B. Parathion, C. Carbamate, D. Organochlorocompounds', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Refer kDT 6/e p 105 Cholinesterase Activator, Antidote to organophosphate poisoning, as long as it is administered within first half-hour, before aging occurs.', 'role': 'assistant'}]