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
Pin-point pupils are seen in: Kerala 09; Punjab 09; UP 10 
Select and explain. 
A. OPC poisoning, B. Opium poisoning, C. Alphos poisoning, D. Dhatura poisoning
B: Opium poisoning
Answer: B: Opium poisoning 
Explanation: Ans. Opium poisoning