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: Pediatrics
A five year old child presents to the emergency depament with burns. The burn area corresponding to the size of his palm is equal to: 
Select and explain. 
A. 1%BSA, B. 5%BSA, C. 10%BSA, D. 20%BSA
A: 1%BSA
Answer: A: 1%BSA 
Explanation: According to the rule of palm,burn area corresponding to the size of palm is 1%. Ref: Nonprescription product therapeutics By W. Steven Pray, page 547.