The Chemical Reaction During Low Current Discharge of a Simple

The chemical reaction during low current discharge of a simple "dry cell" involves: (unbalanced) Zn + MnO₂ + NH₄Cl → ZnCl₂ + Mn₂O₃ + NH₃ + H₂O
What is the coefficient for zinc in the balanced equation that uses the lowest whole number ratios, and what is the limiting reagent for a process in which equal masses of reactants are mixed?

A) 1/Zn
B) 2/Zn
C) 1/MnO₂
D) 2/MnO₂
E) 2/NH₄Cl