This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Body Fluids, Subject name: Physiology
False about total body water (TBW) - 
Select and explain. 
A. ICF is 2/3rd of TBW, B. In newborn TBW is 60% of body weight, C. Premature newborns have more TBW, D. In adults, TBW is 60% of body weight
B: In newborn TBW is 60% of body weight
Answer: B: In newborn TBW is 60% of body weight 
Explanation: Ans. is 'b' i.e., In newborn TBW is 60% of body weighto In a term newborn, TBW is 70-80% of body weight. It is more in premature newborn than in term newborn.o Other options are correct.Extracellular fluid (14 litres)o 20% of body weighto 33% of total body waterIntracellular fluid (ICF)Plasmao 3.5 litreso 5% of body weighto 8% of total body watero 25% of ECFo 28 litreso 40% of body weighto 67% of total body waterInterstitial fluido 10.5 litreso 15% of body weighto 25% of total body watero 75% of ECF Total body water (42 litres)o 60% of body weight