Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?

  • A
    Enzymes require optimum pH for maximal activity.
  • B
    Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperatures $80^{\circ}C - 90^{\circ}C$.
  • C
    Enzymes are highly specific.
  • D
    Most enzymes are proteins but some are lipids.

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