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
What effect does hyperventilation have on the oxygen binding affinity of hemoglobin? 
Select and explain. 
A. P50 and oxygen affinity decrease, B. P50 and oxygen affinity increase, C. P50 decreases and the oxygen affinity increases, D. P50 increases and the oxygen affinity decreases
C: P50 decreases and the oxygen affinity increases
Answer: C: P50 decreases and the oxygen affinity increases 
Explanation: None