This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'Bulla ethmoidalis is seen in: \nSelect and explain. \nA. superior meatus, B. Inferior meatus, C. Middle meatus, D. Sphenoethmoidal reces', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Middle meatus: It lies between the middle and inferior turbinates and is impoant because of the presence of osteomeatal complex in this area. Ref:Dhingra 5/e,p 152,153.', 'role': 'assistant'}]