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: Unknown
[{'content': 'Dawson disease is - \nSelect and explain. \nA. SSPE, B. Acute disseminated encephalomyelitis, C. Neuromyelitis optica, D. Paralysis agitans', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., SSPE o SSPE is also known as Dawson encephalitis and myelitis.", 'role': 'assistant'}]