Identify the correct statement regarding enzymes.
- AEnzymes are specific biological catalysts that cannot be poisoned.
- BEnzymes are normally heterogeneous catalysts that are very specific in their action.
- CEnzymes are specific biological catalysts that can normally function at very high temperature $(T \sim 1000 \ K)$.
- DEnzymes are specific biological catalysts that possess well-defined active sites.
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Observe the following reactions:
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