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': "As per 'Rule of Nine', each lower limb accounts for how much % of total body surface area: \nSelect and explain. \nA. 1%, B. 9%, C. 18%, D. 27%", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. 18%', 'role': 'assistant'}]