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': 'Phase II block is seen in – \nSelect and explain. \nA. Sexamethonium (Sch), B. d–TC, C. Ether, D. N2O', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Succinylcholine produces Dual block i.e. phase I and phase II.', 'role': 'assistant'}]