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': 'Maxillary sinusitis due to viral etiology is: \nSelect and explain. \nA. Treated as bacterial sinusitis only., B. Self limiting., C. More severe than bacterial sinusitis., D. All of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]