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': 'SARS is caused by? \nSelect and explain. \nA. Influenza virus, B. Corona virus, C. Anthrax virus, D. Poxvirus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) Corona virusREF: Jawetz Microbiology 24th edition chapter 41See details of SARS in Microbiology 2012 Session 1Repeat Microbiology June 2009', 'role': 'assistant'}]