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
2,3 DPG causes - 
Select and explain. 
A. Decrease binding of O2 and hemoglobin, B. Increased acidity in RBC, C. Decreased acidity in RBC, D. Lysis of RBC
A: Decrease binding of O2 and hemoglobin
Answer: A: Decrease binding of O2 and hemoglobin 
Explanation: Ans. is 'a' i.e., Decrease binding of O2 and hemoglobin