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': 'All of the following are true regarding progressive multifocal leukoencephalopathy except -a) Only manifestation of JC virus infectionb) Late manifestation of AIDSc) Cerebellar involvements is unknownd) Paradoxical worsening with anti-retroviral therapy \nSelect and explain. \nA. ab, B. bc, C. bd, D. cd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]