A certain quantity of electricity is passed through an aqueous solution of AgNO₃ and cupric salt solution connected in series. The amount of silver deposited is 1.08 g. The amount of copper deposited is :
[At.wt. of Cu = 63.54; Ag = 108]
A. 6.354 g
B. 0.3177 g
C. 0.6454 g
D. 3.177 g