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
True statement regarding rocuronium is 
Select and explain. 
A. Benzylisoquinoline structure, B. It’s metabolite is laudanosine, C. Fastest onset and intermediate duration of action, D. Fastest onset and short duration of action
C: Fastest onset and intermediate duration of action
Answer: C: Fastest onset and intermediate duration of action 
Explanation: Rocuronium is aminosteroid compound
Fast onset and intermediate duration of action.