This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity, Subject name: ENT
[{'content': 'Most common tumor of submandibular gland is - \nSelect and explain. \nA. Pleomorphic adenoma, B. Adenolymphoma, C. Oncocytoma, D. Hemangioma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pleomorphic adenoma * Pleomorphic adenoma - Most common benign tumor of submandibular gland* Adenoid cystic carcinoma - Most common malignant tumor of submandibular gland.", 'role': 'assistant'}]