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
[{'content': 'Which of the following statement is false about submandibular sialadenitis \nSelect and explain. \nA. Viral infections are more common, B. Bacterial occurs due to stone, C. Painful swelling, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bacterial infections are more common due to obstruction by stone.\nMumps is the most common viral cause.', 'role': 'assistant'}]