This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Initial Care of the Burn Patient, Subject name: Surgery
What is the % Body surface area involved in burns of the perineum? 
Select and explain. 
A. 1%, B. 3%, C. 5%, D. 9%
A: 1%
Answer: A: 1% 
Explanation: Ans. (a) 1%Ref: Sabiston 19th ed. 1523Perineum involved in burns is 1% of body surface area.