This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': 'Most common malignant parotid tumour is \nSelect and explain. \nA. Oncocytoma, B. Wahins tumour, C. Adenoid cystic carcinoma, D. Mucoepidermoid carcinoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Among primary parotid malignant tumors, mucoepidermoid carcinoma is the most common, followed by adenocystic carcinoma. Reference : Bailey & love, 27th Edition, page no = 789.', 'role': 'assistant'}]