This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMT Q Bank, Subject name: Forensic Medicine
[{'content': 'Rule of 9 in burns is used to denote : \nSelect and explain. \nA. Depth of burns, B. Total body surface area involved, C. Severity of burns, D. Type of burns', 'role': 'user'}, {'content': 'Answer: B \nExplanation: For total body surface area of burns in adults: \'Rule of Wallace\' or \'Rule of nine\' 9% for each upper limb 9% each for the front and back of each lower limb, 9% for the front and back of chest, 9% for the front and back of abdomen, 9% for the head and neck and 1% for the perineum OTHER METHODS: Use of patient\'s hand -The area of the back of the patient\'s hand is approximately 1% of their total body surface area. The number of "hands" that equal the area of the burn can approximate the percentage of body surface area burned. Lund-Browder burn diagram- This allows an accurate age-adjusted determination of burn size for a given depth, allowing for the anatomical differences of children. NOTE: Lund-Browder cha method is a most precise method for estimation of burn area.', 'role': 'assistant'}]