This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
All of the following may be used for premedication except 
Select and explain. 
A. Diazepam, B. Pethidine, C. Atropine, D. Pancuronium
D: Pancuronium
Answer: D: Pancuronium 
Explanation: Diazepam (benzodiazepine) is used for relieving anxiety, inducing good sleep and producing amnesia. Opioids for producing analgesia and atropine (anticholinergics) for drying up the secretions. Pancuronium is non-depolarizing muscle relaxant used during surgery to produce muscle relaxation. REf KATZUNG 12TH ed.