Which of These Is Not an Oxidation-Reduction Reaction

Which of these is not an oxidation-reduction reaction?

A) CuO(s) + H₂(g) → Cu(s) + H₂O(l)
B) CO₂(g) + H₂(g) → CO(g) + H₂O(l)
C) I ⁻ (aq) + NO₃ ⁻ (aq) → NO(g) + I ₂ (s)
D) Mn(OH) ₂(s) + MnO₄ ⁻ (aq) → MnO₄^{2 −} (aq)
E) HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O (l)