All of the Following Half-Reactions Are Balanced Except

Multiple Choice

All of the following half-reactions are balanced except

A) NO₃^-(aq) + 4H⁺(aq) + 3e^- → NO(g) + 2H₂O(l) .
B) H₃PO₃(aq) + H₂O(l) → H₃PO₄(aq) + 2H⁺(aq) + 2e^-.
C) 2Ta(s) + 5H₂O(l) → Ta₂O₅(s) + 10H⁺(aq) + 10e^-.
D) 2H₂O(l) + 2e^- → H₂(g) + 2OH^-(aq) .
E) H₂O₂(aq) → 2OH^-(aq) + 2e^-.