Balance the Chemical Equation for the Following Redox Reaction Under $\to$

Balance the chemical equation for the following redox reaction under basic aqueous conditions with the smallest whole-number coefficients possible using the half-reaction method.On which side does OH^- appear,and what is its coefficient? ClO₃^-(aq) + N₂H₄(g) $\to$ Cl^-(aq) + NO(g)

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