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: Medicine
[{'content': 'In chronic dialysis, most common CNS manifestation is - \nSelect and explain. \nA. Sensory loss, B. Paralysis, C. Dementia, D. Depression', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]