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
The commonly used screening test for Human immunodeficiency virus is - 
Select and explain. 
A. VDRL test, B. Weil-Felix test, C. ELISA test, D. Western blot test
C: ELISA test
Answer: C: ELISA test 
Explanation: ELISA is ideal for screening test of HIV ,several serum sample at a time REF:ANANTHANARAYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO 579