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: Physiology
Volume of ECF in body is 
Select and explain. 
A. 0.1 × body weight, B. 0.2 × body weight, C. 0.3 × body weight, D. 0.4 × body weight
B: 0.2 × body weight
Answer: B: 0.2 × body weight 
Explanation: Total body weight = 0.6 × body weight
ICF = 0.4 × body weight
ECF = 0.2 × body weight
Plasma = 0.05 × body weight
Interstitial fluid = 0.15 × body weight