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': 'According to "rule of nines", burns involving perineum are: \nSelect and explain. \nA. 1%, B. 9%, C. 18%, D. 27%', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A: 1% Rule of 9's for Adults: 9% for each arm, 18% for each leg, 9% for head, 18% for front torso, 18% for back torso 1% for perineum Rule of 9's for Children: 9% for each arm, 14% for each leg, 18% for head, 18% for front torso, 18% for back torso Lund-Browder diagrams improve the accuracy of the % TBSA for children. Palmar hand surface is approximately 1% TBSA", 'role': 'assistant'}]