The diagram illustrates a metabolic pathway. Reactant $\xrightarrow{\text{enzyme 1}}$ substance X $\xrightarrow{\text{enzyme 2}}$ substance Y $\xrightarrow{\text{enzyme 3}}$ end product. What would happen if a small quantity of a non-competitive inhibitor of enzyme 2 were added?
- AEnzyme 2 would be partially denatured.
- BSubstance X would increase in concentration.
- CSubstance Y would no longer be formed.
- DThe initial reactant would no longer be metabolised.