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: Microbiology
Human metapneumovirus is structurally similar to: 
Select and explain. 
A. Influenza virus, B. Respiratory syncytial virus, C. Measles virus, D. Rubella virus
B: Respiratory syncytial virus
Answer: B: Respiratory syncytial virus 
Explanation: Ans. b. Respiratory syncytial virus