In a Fuel Cell That Uses Gaseous Hydrogen and Oxygen $\rightarrow$

In a fuel cell that uses gaseous hydrogen and oxygen as reactants, which one of the following reactions is occurring at the anode?

A) 2H₂O F $\rightarrow$ 2H₂ + O₂
B) H₂ $\rightarrow$ 2H⁺ + 2e^-
C) 2H⁺ + 2e^- $\rightarrow$ H₂
D) O₂ + 4e^- $\rightarrow$ 2O^2-
E) 2O^2- $\rightarrow$ O₂ + 4e^-