This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
[{'content': 'Most common site of carcinoma of paranasal sinus is? \nSelect and explain. \nA. Frontal, B. Ethmoid, C. Maxillary, D. Sphenoid', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) MaxillaryRef: Dhingra's 4th ed p-195", 'role': 'assistant'}]