This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: A.N.S., Subject name: Pharmacology
[{'content': 'Which of the following drug is commonly used in narcoanalysis? \nSelect and explain. \nA. Atropine sulfate, B. Scopolamine hydrochloride, C. Phenobarbitone, D. Morphine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (B) Scopolamine hydrochloride(Ref: J Psychiatry and Law 1993:3:447-471)Controlled administration of intravenous hypnotics to obtain information from subjects who are unable or unwilling to provide it otherwise, is known as Narcoanalysis or Narcosynthesis.Drugs used for narcoanalysis are:[?]Ethanol[?]Scopolamine[?]Temazepam[?]Barbiturates like Thiopentone and AmobarbitalThese drugs are also known as truth drug or truth serum.Phenobarbitone is not used, rather amobarbital is used for narcoanalysis.', 'role': 'assistant'}]