This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': "Corpus callosum involvement on MRI is usually seen in which of the following conditions? NOT RELATED-MEDICINE \nSelect and explain. \nA. SSPE, B. Krabbe's disease, C. Phytanic acid deficiency, D. Butterfly glioblastoma", 'role': 'user'}, {'content': 'Answer: D \nExplanation: .', 'role': 'assistant'}]