The Voltaic Cell Made Up of Cobalt, Copper, and Their $\to$

The voltaic cell made up of cobalt, copper, and their M²⁺ ions, has E°_cell = 0.62 V. If E° of the cathode half-cell is 0.34 V, what is E° of the anode half-cell?
Cu²⁺(aq) + Co(s) $\to$ Cu(s) + Co²⁺(aq)

A) -0.28 V
B) -0.96 V
C) 0.28 V
D) 0.96 V
E) none of the above