This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rectum and anal canal, Subject name: Surgery
[{'content': 'In which of the following condition local excision in rectal carcinoma can not be done? \nSelect and explain. \nA. Within 10 cm of the dentate line, B. Lesion 2.7 cm, C. Involvement of <30% bowel circumference, D. T1 and T2 cancer with lymph node involvement', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Suggested criteria for local excision in rectal cancer: Physical examination Imaging Histology Tumor <3 cm Tumor <30% of bowel circumference Tumor within 15 cm of dentate line Tumor freely mobile Tumor limited to submucosa (T1) No lymph node involvement (N0) Well to moderately differentiated Absence of lymphovascular invasion or perineural invasion No mucinous or signet cell component', 'role': 'assistant'}]