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: Pathology
In community-acquired acute bacterial sialadenitis, the most common causative pathogen is: 
Select and explain. 
A. S. aureus, B. S. albus, C. S. salivarius, D. None of the above
A: S. aureus
Answer: A: S. aureus 
Explanation: In community-acquired acute bacterial sialadenitis, the most common causative pathogen is S. aureus, which can be eradicated using an antibiotic with Gram-positive coverage such as amoxicillin with clavulanate or clindamycin.