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: Medicine
[{'content': 'Herpes simplex encephalitis is diagnosed by -a) MRIb) Biopsyc) Corneal scrapping and cultured) EEG periodic lateralisede) CSF PCR of HSV DNA \nSelect and explain. \nA. abcd, B. abde, C. abd, D. ade', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]