The diagram presents an enlarged view of part of the lungs that contains specialised tissues. In which location would a high proportion of carbonic anhydrase, $\text{HCO}_3^-$ ions and lysosomes be present?
- Acarbonic anhydrase: 1; $ ext{HCO}_3^-$ ions: 3; lysosomes: 4
- Bcarbonic anhydrase: 2; $ ext{HCO}_3^-$ ions: 4; lysosomes: 5
- Ccarbonic anhydrase: 3; $ ext{HCO}_3^-$ ions: 5; lysosomes: 6
- Dcarbonic anhydrase: 4; $ ext{HCO}_3^-$ ions: 6; lysosomes: 1