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': 'A patient sore throat has a positive Paul Bunnel test. The causative organism is - \nSelect and explain. \nA. EBV, B. Herpesvirus, C. Adenovirus, D. CMV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Standard diagnostic test for EBV is Paul bunnel test REF:ANANTHANARYANAN TEXTBOOK OF MICROBIOLOGY 9EDITION PGNO.476', 'role': 'assistant'}]