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': 'True statement regarding rocuronium is \nSelect and explain. \nA. Benzylisoquinoline structure, B. It’s metabolite is laudanosine, C. Fastest onset and intermediate duration of action, D. Fastest onset and short duration of action', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Rocuronium is aminosteroid compound\nFast onset and intermediate duration of action.', 'role': 'assistant'}]