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
Most common malignant parotid tumour is 
Select and explain. 
A. Oncocytoma, B. Wahins tumour, C. Adenoid cystic carcinoma, D. Mucoepidermoid carcinoma
D: Mucoepidermoid carcinoma
Answer: D: Mucoepidermoid carcinoma 
Explanation: Among primary parotid malignant tumors, mucoepidermoid carcinoma is the most common, followed by adenocystic carcinoma. Reference : Bailey & love, 27th Edition, page no = 789.