Balance the Following Redox Reaction Under Acidic Aqueous Conditions Using $\rightarrow$

Balance the following redox reaction under acidic aqueous conditions using the smallest whole-number coefficients possible.What is the coefficient of H₂O?
CrO₄^{2 -} (aq) +Cl₂ (aq) $\rightarrow$ Cl ^- (aq) + Cr³⁺(aq)

A) 2
B) 3
C) 4
D) 6
E) 12