Which One of the Following Is Not a Redox Reaction $\to$

Which one of the following is not a redox reaction?

A) Al(OH) ₄^-(aq) + 4H⁺(aq) $\to$ Al³⁺(aq) + 4H₂O(l)
B) C₆H₁₂O₆(s) + 6O₂(g) $\to$ 6CO₂(g) + 6H₂O(l)
C) Na₆FeCl₈(s) + 2Na(l) $\to$ 8NaCl(s) + Fe(s)
D) 2H₂O₂(aq) $\to$ 2H₂O(l) + O₂(g)
E) CO₂(g) + H₂(g) $\to$ CO(g) + H₂O(g)