Identify the correct statement regarding enzymes.

  • A
    Enzymes are specific biological catalysts that can normally function at very high temperatures $(T > 1000 \; K)$.
  • B
    Enzymes are normally heterogeneous catalysts that are very specific in their action.
  • C
    Enzymes are specific biological catalysts that cannot be poisoned.
  • D
    Enzymes are specific biological catalysts that possess well-defined active sites.

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