(A) Hydrogen at cathode and nitrogen at anode
(B) Copper at cathode and oxygen at anode
(C) Copper at anode and oxygen at cathode
(D) None of the above
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(A) Hydrogen at cathode and nitrogen at anode
(B) Copper at cathode and oxygen at anode
(C) Copper at anode and oxygen at cathode
(D) None of the above