A silver and a copper voltmeters are connected in parallel across a 6 volt battery of negligible resistance. In half an hour, 1 gm of copper and 2 gm of silver are deposited. The rate at which energy is supplied by the battery will approximately be (Given E.C.E. of copper \[=3.294\times {{10}^{-4}}\,g/C\] and E.C.E. of silver \[=1.118\times {{10}^{-3}}\,g/C)\]

• A.            64 W                                        
• B.            32 W
• C.            96 W                                        
• D.            16 W