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': 'The commonly used screening test for Human immunodeficiency virus is - \nSelect and explain. \nA. VDRL test, B. Weil-Felix test, C. ELISA test, D. Western blot test', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ELISA is ideal for screening test of HIV ,several serum sample at a time REF:ANANTHANARAYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO 579', 'role': 'assistant'}]