Balance the Following Redox Reaction Under Basic Aqueous Conditions Using $\to$

Balance the following redox reaction under basic aqueous conditions using the smallest whole-number coefficients possible.On which side does OH^-appear,and what is its coefficient? Cr(OH) ₃(s) + ClO₃^-(aq) $\to$ CrO₄^2-(g) + Cl^-(aq)

A) right,2
B) left,4
C) left,1
D) right,3
E) OH^- is not required to balance the equation