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': 'Test of chicken pox except \nSelect and explain. \nA. FAMA, B. ELISA, C. Immunofluorescence, D. PCR', 'role': 'user'}, {'content': "Answer: A \nExplanation: Diagnosis of chickenpox include immunofluorescence, ELISA, PCR, etc REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:472", 'role': 'assistant'}]