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
[{'content': 'The amount of body water in human body is \nSelect and explain. \nA. 70%, B. 60%, C. 50%, D. 40%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 60% of the body contains water Ref: guyton and hall textbook of medical physiology 12 edition page number:45,46,47', 'role': 'assistant'}]