The Voltaic Cell Composed of Co(s), Co²⁺(aq), Cu(s), and Cu²⁺(aq)

The voltaic cell composed of Co(s) , Co²⁺(aq) , Cu(s) , and Cu²⁺(aq) 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) → Cu(s) + Co²⁺(aq)

A) -0.28 V
B) -0.96 V
C) 0.28 V
D) 0.96 V
E) 0.21 V