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': 'True about infectious mononucleosis - \nSelect and explain. \nA. Associated with heterophile antibodies, B. Monocytosis, C. Associated with cold agglutinin, D. Associated with CMV infection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In infectious mononucleosis heterophile antibodies agglutinate sheep erythrocyte REF:ANANTHANARYANAN TEXTBOOK OF MICROBIOLOGY 9EDITION PGNO.476', 'role': 'assistant'}]