This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Causative agent of Infectious mononucleosis \nSelect and explain. \nA. HIV, B. Hepatitis B, C. Herper Simplex, D. Epstein - Barr virus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Solution\n\nEpstein - Barr virus (EBV) causes infectious mononucleosis\nEBV nfect B lymphocytes by binding to CD21 (CR2) receptor', 'role': 'assistant'}]