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) coefficient 1 and limiting reagent Zn
B) coefficient 2 and limiting reagent Zn
C) coefficient 1 and limiting reagent MnO₂
D) coefficient 2 and limiting reagent MnO₂
E) coefficient 2 and limiting reagent NH₄Cl