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
Opium poisoning is treated with: 
Select and explain. 
A. Nalorphine, B. Atropine, C. Neostigmine, D. All
A: Nalorphine
Answer: A: Nalorphine 
Explanation: A i.e. Nalorphine