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': 'Prions consist of - \nSelect and explain. \nA. DNA and RNA, B. DNA, RNA and Protein, C. RNA and protein, D. Only proteins', 'role': 'user'}, {'content': 'Answer: D \nExplanation: prions are protein in nature&devoid of DNA&RNA REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.557', 'role': 'assistant'}]