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: Surgery
Which is the commonest Post splenectomy infection- 
Select and explain. 
A. Streptococcus pyogenes, B. Staphylococcus aureus, C. Streptococcus Pneumoniae, D. Pseudomonas aeruginosa
C: Streptococcus Pneumoniae
Answer: C: Streptococcus Pneumoniae 
Explanation: None