This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
[{'content': 'Which of the following drugs is used for narcoanalysis - \nSelect and explain. \nA. Atropine, B. Phenobarbitone, C. Scopolamine, D. Pethidine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Scopolamine is used as truth serum. Drugs commonly used in narcoanalysis are 1. Thiopentone sodium (Sodium pentothal) 2. Scopolamine hydrobromide 3. Sodium secnol 4. Benzodiazepines REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION', 'role': 'assistant'}]