![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
The function of 2,3-BPG in red blood cells is
A.
lowering hemoglobin affinity for oxygen
B.
maintaining normal operation of the calcium pump on the red blood cell membrane
C.
m aintaining red blood cell volume and biconcave shape
D.
lowering hemoglobin affinity for CO 2
E.
increasing hemoglobin affinity for oxygen