If cadmium metal and the Fe(III) ion are mixed in aqueous solution, a solution containing Cd(II) and Fe(II) results. The balanced equation for this process is
a. Cd(s) + Fe3+(aq) ? Fe2+(aq) + Cd2+(aq).
b. Cd(s) + 2 Fe3+(aq) ? 2 Fe2+(aq) + Cd2+(aq).
c. 2 Cd(s) + Fe3+(aq) ? Fe2+(aq) + 2 Cd2+(aq).
d. 2 Cd(s) + Fe3+(aq) ? 2 Fe2+(aq) + Cd2+(aq).
e. 2 Cd(s) + Fe3+(aq) ? Fe2+(aq) + 2 Cd2+(aq).