Calculate the standard cell potential for the following reaction, and determine whether or not this reaction is spontaneous under standard conditions:
Pb2+(aq) + 2 Fe2+(aq) → 2 Fe3+(aq) + Pb(s)
A. E° = -0.90 V, nonspontaneous
B. E° = -0.90 V, spontaneous
C. E° = 0.90 V, nonspontaneous
D. E° = 0.90 V, spontaneous
E. E° = -0.77 V, nonspontaneous