This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Commonly used in narco-analysis: Al 10; JIPMER 13 
Select and explain. 
A. Atropine sulfate, B. Scopolamine hydrobromide, C. Opium compounds, D. Phenobarbital
B: Scopolamine hydrobromide
Answer: B: Scopolamine hydrobromide 
Explanation: Ans. Scopolamine hydrobromide