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': 'SARS true are -a) Severe acute respiratory syndromeb) Documented respiratory route spreadc) Effective vaccine availabled) Cause atypical pneumonitise) Group coronavirus \nSelect and explain. \nA. abde, B. bcde, C. acde, D. cde', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]