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': 'Rapaport leubering cycle \nSelect and explain. \nA. Occurs in erythrocyte, B. Concerned with 2,3 DPG, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]