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': '14.All of the following are true about antrochonal polyp,except: \nSelect and explain. \nA. Single, B. Unilateral, C. Premalignant, D. Arises from maxillary antrum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref: Dhingra 7e pg 195.', 'role': 'assistant'}]