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: ENT
[{'content': 'Pathognomic features of Maxillary sinusitis is - \nSelect and explain. \nA. Mucopus in the middle meatus, B. Inferior turbinate hypertrophy, C. Purulent nasal discharge, D. Atrophic sinusitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Characteristic finding of maxillary sinusitis on Rhinoscopy is pus or mucopus in in the middle meatus.\nMucosa and turbinates may appear red and swollen.\n\nRemember: Dental infections are an important source of maxillary sinusitis.', 'role': 'assistant'}]