This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Which of the following is not a prion disease \nSelect and explain. \nA. Bovine spongiform encephalopathy, B. Transmissible mink encephalopathy, C. Scrapie, D. Progressive multifocal leucoencephalopathy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Progressive multifocal leukoencephalopathy is a human infection caused by a papova virus. Ref: Baveja textbook of microbiology; 4th edition.', 'role': 'assistant'}]