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: Biochemistry
[{'content': 'In an average young adult male, water constitutes about ______ % of the body weight. \nSelect and explain. \nA. 40, B. 50, C. 60, D. 70', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Body is composed of about 60-70% water.\nOsmolality of the intra and extracellular fluid is the same, but there is a marked difference in the solute content.', 'role': 'assistant'}]