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': 'What is the respiratory quotient for a carbohydrate meal? \nSelect and explain. \nA. 0.7, B. 0.8, C. 0.6, D. 1', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Carbohydrate RQ=1\nFat RQ=0.7\nProtein RQ=0.8', 'role': 'assistant'}]