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
The recommended anti-microbial prophylaxis in adults for influenza A is 
Select and explain. 
A. Penicillin, B. Erythromycin, C. Rifampicin, D. Oseltamivir
D: Oseltamivir
Answer: D: Oseltamivir 
Explanation: None