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
A most common organism isolated in breast abscess 
Select and explain. 
A. Streptococcus, B. Staphylococcus aureus, C. Klebsiella, D. E coli
B: Staphylococcus aureus
Answer: B: Staphylococcus aureus 
Explanation: Most common organism  responsible is staphylococcus aureus.
In lactating mothers causative organisms spread from nasopharynx of the infant.