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': 'The estimation of 3-methyl histidine in urine is used to study: \nSelect and explain. \nA. Status of folate in the body, B. Renal disease, C. Skeletal muscle mass, D. Protein absorption in the gut', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Skeletal muscle mass', 'role': 'assistant'}]