In Lungs there if definity exchange of ions between RBC and Plasma. Removal of `CO_(2)` from blood involves -
A. efflux of `Cl^(c-)` ions from RBC
B. influx of `Cl^(c-)` ions into RBC.
C. influx of `HCO_(3)^(c-)` ions into Plasma
D. efflux of `HCO_(3)^(c-)` ions from RBC
