This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Radiology
[{'content': 'In which pathology is this finding present? \nSelect and explain. \nA. Sturge Weber, B. Neurofibromatosis, C. Multiple Sclerosis, D. Tuberous sclerosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Multiple SclerosisThe given image is of Dawson finger sign in MRI brain in Multiple Sclerosis where demyelinating white matter plaques are arranged at right angles to the lateral ventricles.', 'role': 'assistant'}]