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 for rodent ulcer is - \nSelect and explain. \nA. Inner canthus, B. Outer canthus, C. Angle of mouth, D. Cheek', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]