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 of the following statement is false about submandibular sialadenitis 
Select and explain. 
A. Viral infections are more common, B. Bacterial occurs due to stone, C. Painful swelling, D. None of the above
A: Viral infections are more common
Answer: A: Viral infections are more common 
Explanation: Bacterial infections are more common due to obstruction by stone.
Mumps is the most common viral cause.