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: Pathology
[{'content': 'Most common parotid tumor ? \nSelect and explain. \nA. Pleomorphic adenoma, B. Adenocystic carcinoma, C. Epidermoid tumor, D. Adenocarcinoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pleomorphic", 'role': 'assistant'}]