81. Using the data shown as follows to calculate ΔG° for the reaction (1 F = 96,485 coulombs):2Fe3+(aq) + Cu(s) → 2Fe2+(aq) + Cu2+(aq)The reduction potentials for Fe3+ and Cu2+ are as follows: Fe3+ + e– → Fe2+    ε° = 0.77 V Cu2+ + 2e– → Cu      ε° = 0.34 V 
(A) –8.3 × 104 J
(B) –1.2 × 105 J
(C) –4.2 × 104 J
(D) –6.0 × 104 J
(E) –2.4 × 105 J