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': 'Anti pruritic property is seen with \nSelect and explain. \nA. Thiopentone, B. Propofol, C. Etomidate, D. Ketamine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Propofol has anti pruritic property.', 'role': 'assistant'}]