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: Pediatrics
Most common Organism causing Bronchiolitis 
Select and explain. 
A. Respiratory syncytial Virus, B. Parainfluenza virus, C. Hemophilius Influenza A, D. Hemophilius Influenza B
A: Respiratory syncytial Virus
Answer: A: Respiratory syncytial Virus 
Explanation: Most common Organism causing Bronchiolitis Respiratory Syncytial Virus.