This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
The amount of body water in human body is 
Select and explain. 
A. 70%, B. 60%, C. 50%, D. 40%
B: 60%
Answer: B: 60% 
Explanation: 60% of the body contains water Ref: guyton and hall textbook of medical physiology 12 edition page number:45,46,47