The standard reduction potentials for the following half-cell reactions are,
2H₂O_(l) = O_2(g) + 4H⁺ (aq) + 4e E⁰ = -1.23V
2H₂O₂(l) = 2O_2(g) + 4H⁺(aq) + 4e E⁰= -0.68V
What is the Ea for the reaction, 2H₂O_2(l) = 2H₂O_(l) + O_2(g) at 298K?

• A.-0.68
• B.-1.23V
• C.+0.55V
• D.+1.91V