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: Microbiology
[{'content': 'Encephalitis is caused by - \nSelect and explain. \nA. HSV-1, B. EBV, C. Infectious mononucleosis, D. CMV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: HSV encephalitis is the most common sporadic acute viral encephalitis in most part of the world', 'role': 'assistant'}]