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: Pharmacology
Neuraminidase inhibitor - 
Select and explain. 
A. Oseltamivir, B. Amantadine, C. Enfuviide, D. Formivirsen
A: Oseltamivir
Answer: A: Oseltamivir 
Explanation: Ans. is 'a' i.e., Oseltamivir o Oseltamivir acts by inhibiting influenza virus neuraminidase enzyme which is needed for release of progeny virions from the infected cell.