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': "Dawson's fingers are seen in \nSelect and explain. \nA. Multiple sclerosis, B. Multiple myeloma, C. Freidreich's ataxia, D. SACD", 'role': 'user'}, {'content': "Answer: A \nExplanation: Answer- A. Multiple sclerosisDawson's fingers on MRI scans are diagnostic of Multiple Scerlosis", 'role': 'assistant'}]