Calculate $\Delta$ G° for the Reaction of Iron(II)ions with One Mole of Mole

Calculate $\Delta$ G° for the reaction of iron(II) ions with one mole of permanganate ions.
MnO₄^-(aq) + 8H⁺(aq) + 5e^-
Mn²⁺(aq) + 4H₂O(l) ;E° = 1.51 V
Fe³⁺(aq) + e^-
Fe²⁺(aq) ;E°= 0.77 V

A) -71.4 kJ
B) -286 kJ
C) -357 kJ
D) -428 kJ
E) None of these choices is correct.