Which one of the following is not a redox reaction?

Question

A. H2O(l) + NH3(g) → NH4+(aq) + OH¯(aq)
B. 2H2(g) + O2(g) → 2H2O(l)
C. Cl2(g) + 2KBr(aq) → Br2(l) + 2KCl(aq)
D. 6FeSO4(aq) + K2Cr2O7(aq)+ 7H2SO4(aq) → Cr2(SO4)3(aq) + 3Fe2(SO4)3(aq)+ K2SO4(aq) + 7H2O(l)
E. Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g)

I think it's A, but I'm not certain. Please answer ASAP, thx in advance

Answer 1

It was A :DDD, but I missed a question on spectator ions.