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: Pharmacology
Which one of the following drug is not a non-opioid analgesic drug? 
Select and explain. 
A. Meloxicam, B. Methadone, C. Nimesulide, D. Nabumetone
B: Methadone
Answer: B: Methadone 
Explanation: Ans. is 'b' i.e., Methadone Meloxicam, Nimesulide and Nabumetone are NSAIDs. o NSAIDs are also called nonnarcotic, nonopioid or aspirin like analgesics. o Methadone is an opioid.