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: Surgery
[{'content': 'All of the following are true about carcinoma hard palate except: \nSelect and explain. \nA. Associated with reverse smoking, B. Most cancers are poorly differentiated and of ulcerative variety, C. Lymphatic metastasis is uncommon, D. Larger tumors require maxillectomy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CANCER OF HARD PALATE: - SCC of hard palate is rare, Associated with reverse smoking. - Minor salivary gland tumors occur in the hard palate. - Well differentiated and of ulcerative variety. Clinical features - Presents as Painless mass in the roof of the mouth - Lymphatic metastasis is uncommon, mainly to level I and II Treatment: - Smaller tumors: Excision with underlying bone. - Larger tumors: Maxillectomy Radiotherapy is used is advanced lesions.', 'role': 'assistant'}]