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': 'Antral puncture is made on \nSelect and explain. \nA. Medial wall of maxillary sinus, B. Lateral wall of maxillary sinus, C. Apex of of maxillary sinus, D. Roof of maxillary sinus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]