This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Myxo Viruses, Subject name: Microbiology
Hemagglutination showing viruses are? 
Select and explain. 
A. Respiratory syncytial virus, B. Influenza virus, C. Paramyxo virus, D. None of these
B: Influenza virus
Answer: B: Influenza virus 
Explanation: Ans. (b) Influenza virusRef: Jawetz 24/e, chapter various chapters