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
[{'content': 'Second gas effect is ? \nSelect and explain. \nA. Displacement of N20 by Oxygen, B. Displacement of oxygen by N20, C. Facilitation of inhalation of Halothane by N20, D. Removal of oxygen by N20 from alveoli during recovery from general anaesthesia', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Facilitation of inhalation of halothane by N20", 'role': 'assistant'}]