Following reaction describes the rusting of iron $4Fe+3O_2\to 4{Fe}^{3+}+6O^{2-}$

Which one of the following statement is incorrect

 $4Fe+3O_2\to 4{Fe}^{3+}+6O^{2-}$ 

in this reaction metallic iron is oxidized to +3 state so metallic iron is a reducing agent and oxygen is reduced to -2 state thus oxygen is a oxidizing agent.

Since oxidation and reduction both takes place thus it is a redox reaction.

Hence the correct option is B.