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
Most common causative organism of acute suppurative parotitis: 
Select and explain. 
A. Staphylococcus aureus., B. Streptococcus pyogens., C. Corynebacterium., D. None
A: Staphylococcus aureus.
Answer: A: Staphylococcus aureus. 
Explanation: None