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: Anaesthesia
Action of scoline is potentiated by– 
Select and explain. 
A. Nitrous oxide, B. Sevoflurane, C. Isoflurane, D. Halothane
A: Nitrous oxide
Answer: A: Nitrous oxide 
Explanation: The mean dose of scoline producing 95% blockade (ED95) at the adductor pollicis is 0.30 - 0.35 mg/kg with opioid-nitrous oxide anesthesia. In the absence of nitrous oxide, the ED 95 is increased to 0.5 mg/kg.