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: Surgery
[{'content': 'Which among the following is most common neoplasm of Salivary gland - \nSelect and explain. \nA. Pleomorphic adenoma, B. Adenocystic Carcinoma, C. Mucoepidermoid, D. Mixed tumour', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans is \'a\' ie Pleomorphic adenoma "Pleomorphic adenomas account for 40% to 70% of all tumors of the salivary glands, most commonly occurring in the tail of the parotid." - Sabiston', 'role': 'assistant'}]