If the aqueous solutions of the following salts are electrolysed for 1 hour with 10 ampere current, which solution will deposit the maximum mass of the metal at cathode ? The atomic weights are : `Fe=56, Zn=65, Ag=108, Hf=178` and `W=184`.
A. `ZnSO_(4)`
B. `FeCl_(3)`
C. `HfCl_(4)`
D. `AgNO_(3)`