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: Physiology
Acclimatization does not include: 
Select and explain. 
A. Hyperventilation, B. Decreased concentration of 2,3 DPG in RBC, C. Increased erythropoiesis, D. Kidney excrete more alkali
B: Decreased concentration of 2,3 DPG in RBC
Answer: B: Decreased concentration of 2,3 DPG in RBC 
Explanation: Acclimatization: The respiratory alkalosis produced by the hyperventilation shifts the oxygen-hemoglobin dissociation curve to the left, but a concomitant increase in red blood cell 2,3-BPG tends to decrease the O2 affinity of hemoglobin. The net effect is a small increase in P50 (right shift).
Erythropoietin secretion increases promptly on ascent to high altitude. The increase in circulating red blood cells triggered by the erythropoietin begins in 2-3 days and is sustained as long as the individual remains at high altitude.