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: Skin
[{'content': 'The most effective treatment of pruritus in uremia is : \nSelect and explain. \nA. Ultraviolet light, B. Cholestyramine, C. Eskazine, D. Topical benzocaine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. Ultraviolet light', 'role': 'assistant'}]