This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Agro-Chemical Poisoning, Subject name: Forensic Medicine
A farmer visiting an orchard gets unconscious, excessive salivation , constricted pupils and fasciculation of muscles, treatment started with 
Select and explain. 
A. Atropine, B. Neostigmine, C. Physostigmine, D. Adrenaline
A: Atropine
Answer: A: Atropine 
Explanation: Ans. is 'a' i.e. Atropine * The signs and symptoms shown by the patient are of cholinergic hyperactivity. The poisoning is most probably by an organophosphorus compound.Best antidote for it is Atropine.Atropine is supplemented by cholinesterase reactivators , the oxime compounds* ( Pralidoxime, Obidoxime, Diacetyl monoxide)