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: Microbiology
[{'content': 'Mad cow disease is due to – \nSelect and explain. \nA. Slow virus, B. Mycoplasma, C. Bacteria, D. Fungus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mad cow disease or bovine spongiform encephalopathy i.e. Caused by “prions”\n“PRIONS” are unconventional transmissible agents, proteinaceous in nature.”\nDiseases caused by prions are\nKuru\nCreutzfeldt Jakob Disease.\nGerstmann Straussler Scheinker Syndrome\nFatal Familial Insomnia.\nScrapie Of Sheep\nTransmissible Encephalopathy of Mink.\nBovine Spongiform Encephalopathy (Mad Cow Disease)', 'role': 'assistant'}]