![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Variations in which of the following components of blood or cerebrospinal fluid do not affect respiration?
A.
Arterial HCO3- concentration
B.
Arterial H+ concentration
C.
Arterial Na+ concentration
D.
Cerebrospinal fluid CO2 concentration
E.
Cerebrospinal fluid H+ concentration