This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thermal injury, Subject name: Forensic Medicine
A 5 year old has burn on the surface of his body corresponding to the size of his palm. The percentage of burns is? 
Select and explain. 
A. 1%, B. 5%, C. 10%, D. 9%
A: 1%
Answer: A: 1% 
Explanation: Reff: The snopsis of forensic medicine& Toxicology 28th edition pg: 165 Palmar surface of patient's hand is about 1% of body surface area.