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
Causative organism of SARS - 
Select and explain. 
A. H1N1, B. Corona virus, C. Rotavirus, D. RSV
B: Corona virus
Answer: B: Corona virus 
Explanation: Severe Acute Respiratory syndrome was caused by coronavirus. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO-560