For the reaction $4Fe + 3O_2 \to 4Fe^{3+} + 6O^{2-}$,which of the following statements is incorrect?

  • A
    It is a redox reaction.
  • B
    Metallic iron is a reducing agent.
  • C
    $Fe^{3+}$ is an oxidizing agent.
  • D
    Metallic iron is reduced to $Fe^{3+}$.

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