This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plastic & Reconstructive Surgery, Subject name: Surgery
A 30-year-old female with history of burns involving abdomen, both limbs and back and presented after 8 hours which of the following is the formula for calculation of fluid infusion: 
Select and explain. 
A. 4 mL/Kg x% TBSA for first hours than 2 mL/kg x% TBSA, B. 2 mL/Kgx% TSBA, C. 3 mL/Kgx% TSBA, D. 5 mL/kgx% TSBA
A: 4 mL/Kg x% TBSA for first hours than 2 mL/kg x% TBSA
Answer: A: 4 mL/Kg x% TBSA for first hours than 2 mL/kg x% TBSA 
Explanation: Ans. (a) 4mL/kgx%TBSA for first 8 hours than 2mL/kgx%TBSA .* Whenever the patient comes we must start with 4mL/kgxTBSA. Total fluid calculates half is given in first 8 hours and remaining half in 16 hours.* Delay in presentation is not going to reduce the fluids needed.