26.下列何者為質子交換膜燃料電池的陽極反應式?(A) 1/2 O2+2H++2e-→ 2H2O (B) 1/2 O2+ H2O +2e-→2OH-(C) H2+O2- →H2O +2e-(D) H2→ 2H++2e-