The same quantity of electricity was passed through separate molten samples of sodium bromide, NaBr, and magnesium chloride, \({\text{MgC}}{{\text{l}}_{\text{2}}}\). Which statement is true about the amounts, in mol, that are formed?

A.     The amount of Mg formed is equal to the amount of Na formed.

B.     The amount of Mg formed is equal to the amount of \({\text{C}}{{\text{l}}_{\text{2}}}\) formed.

C.     The amount of Mg formed is twice the amount of \({\text{C}}{{\text{l}}_{\text{2}}}\) formed.

D.     The amount of Mg formed is twice the

B