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': 'True about sublingual gland tumor is \nSelect and explain. \nA. Mostly Benign, B. Painless swelling, C. Neck dissection is not done, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sublingual gland tumors are usually malignant (85%)\nPresent as painless hard mass.\nTreated by excision and neck dissection.', 'role': 'assistant'}]