Using the Following Standard Reduction Potentials, Fe³⁺(aq)+ E^- → Fe²⁺(aq)E°

Multiple Choice

Using the following standard reduction potentials, Fe³⁺(aq) + e^- → Fe²⁺(aq) E° = +0.77 V
Cd²⁺(aq) + 2 e^- →Cd(s) E° = -0.40 V
Calculate the standard cell potential for the cell reaction given below,and determine whether or not this reaction is spontaneous under standard conditions.
Cd²⁺(aq) + 2 Fe²⁺(aq) → 2 Fe³⁺(aq) + Cd(s)

A) E° = -1.17 V,nonspontaneous
B) E° = -1.17 V,spontaneous
C) E° = +1.17,nonspontaneous
D) E° = + 1.17,spontaneous