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: Forensic Medicine
Rule of 9 in burns is used to denote: NEET 14 
Select and explain. 
A. Depth of burns, B. Total body surface area involved, C. Severity of burns, D. Type of burns
B: Total body surface area involved
Answer: B: Total body surface area involved 
Explanation: Ans. Total body surface area involved