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
Most common feature of opiate poisoning: NIMHANS 11 
Select and explain. 
A. Respiratory depression, B. Hypotension, C. Bradycardia, D. Hypothermia
A: Respiratory depression
Answer: A: Respiratory depression 
Explanation: Ans. Respiratory depression