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
[{'content': 'Which pathogens adhere to respiratory epithelium - \nSelect and explain. \nA. RSV, B. Influenza, C. Parainfluenza, D. HBV', 'role': 'user'}, {'content': "Answer: A \nExplanation: 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", 'role': 'assistant'}]