What Are the Coefficients of the Balanced Equation That Represents $\rightarrow$

What are the coefficients of the balanced equation that represents the reaction in a magnesium/aluminum electrochemical cell? Mg (s) + Al³⁺ (aq) $\rightarrow$ Al (s) + Mg²⁺ (aq)

A) 1,1,1,1
B) 3,2,2,3
C) 2,3,3,2
D) 1,2,1,3