Which statement is accurate?
- AIn a red blood cell, $\text{CO}_2$ can combine with haemoglobin to form haemoglobinic acid.
- BCarbonic anhydrase is an enzyme that catalyses the reaction between $\text{CO}_2$ and $\text{H}_2\text{O}$.
- CAt the lungs, carbon dioxide is released when carbonic acid and water react together.
- DThe greater the concentration of $\text{CO}_2$ in the blood, the higher the affinity of haemoglobin for oxygen.