This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood: RBCs, Anemia, and Polycythemia, Subject name: Physiology
[{'content': '2,3 DPG causes - \nSelect and explain. \nA. Decrease binding of O2 and hemoglobin, B. Increased acidity in RBC, C. Decreased acidity in RBC, D. Lysis of RBC', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Decrease binding of O2 and hemoglobin", 'role': 'assistant'}]