After Balancing the Following Reaction Under Acidic Conditions , How

After balancing the following reaction under acidic conditions , how many mole equivalents of water are required and on which side of the reaction do they appear?
CrO₄^{2 -} (aq) + N₂O (aq) →Cr³⁺ (aq) + NO (g) [Acidic conditions]

A) 2 moles of H₂O on the reactant side
B) 2 moles of H₂O on the product side
C) 5 moles of H₂O on the product side
D) 5 moles of H₂O on the reactant side
E) 10 moles of H₂O on the reactant side