This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Multiple Sclerosis, Subject name: Medicine
[{'content': "A 28-year-old lady with Uhthoff phenomenon MRI shows. \nSelect and explain. \nA. Devic's disease, B. Marburg disease, C. Dawson fingers, D. Acute disseminated encephalomyelitis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Dawson fingers.Image source - style="font-family: Times New Roman, Times, serif">', 'role': 'assistant'}]