In the reaction below, the ____ is being oxidized and the ____ is being reduced.
2 Fe (s) + O₂ (g) + 4 H⁺(aq) -----> 2 Fe²⁺ (aq) + 2 H₂O

a) H+ and Fe
b) Fe and H+
c) O2 and Fe
d) H+ and O2
e)Fe and O2