Which statement gives the correct description of the Bohr shift?
- Athe decrease in affinity of haemoglobin for oxygen that occurs when pH is lowered
- Bthe increase in affinity of haemoglobin for oxygen that occurs when oxygen concentration rises
- Cthe increase in affinity of haemoglobin for oxygen that occurs when pH is at an optimum
- Dthe release of oxygen from oxyhaemoglobin in the absence of carbonic acid