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
Which pathogens adhere to respiratory epithelium - 
Select and explain. 
A. RSV, B. Influenza, C. Parainfluenza, D. HBV
A: RSV
Answer: A: RSV 
Explanation: RSV was obtained from children with lower respiratory tract infection.Because ut caused cell fusion and the firmation of multinucleated syncitia in cell cultures it was named RSV . REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:510