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
Most sensitive test for HIV infection 
Select and explain. 
A. Western blot, B. ELISA, C. Agglutination test, D. CFT
B: ELISA
Answer: B: ELISA 
Explanation: Ans. is `b' i.e., ELISA