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
Post-splenectomy, the patient is in need of ______ vaccination 
Select and explain. 
A. Pneumococcal, B. Rota virus, C. BCG, D. MMR
A: Pneumococcal
Answer: A: Pneumococcal 
Explanation: None