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': 'Commonest site of a rodent ulcer is \nSelect and explain. \nA. Limbs, B. Face, C. Abdomen, D. Trunk', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rodent ulcer is synonymous with basal cell carcinoma.\n90% of basal cell carcinomas are seen in the face, above a line from the corner of mouth to the lobule of ear. The commonest site is around the inner canthus of the eye (also k/a Tear cancer).', 'role': 'assistant'}]