What is the coefficient of \({\rm{F}}{{\rm{e}}_3}{{\rm{O}}_4}\) when the following equation is balanced using the lowest whole numbers?

__ \({\text{Al(s)}} + \) __ \({\text{F}}{{\text{e}}_3}{{\text{O}}_4}({\text{s)}} \to \) __ \({\text{A}}{{\text{l}}_2}{{\text{O}}_3}({\text{s)}} + \) __ \({\text{Fe(s)}}\)

A.     2

B.     3

C.     4

D.     5

B