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
Cholinesterase activators a useful for the treatment of which poisoning 
Select and explain. 
A. Paraquat, B. Parathion, C. Carbamate, D. Organochlorocompounds
B: Parathion
Answer: B: Parathion 
Explanation: 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.