What Is E°_cell for the Following Reaction? 2 Ag(s)+ Sn²⁺(aq)→

What is E°_cell for the following reaction? 2 Ag(s) + Sn²⁺(aq) → 2 Ag⁺(aq) + Sn(s)
Ag⁺(aq) + e^- → Ag(s) E° = 0.80 V
Sn⁴⁺(aq) + 2e^? →Sn²⁺(aq) E° = 0.13 V
Sn²⁺(aq) + 2e^- → Sn(s) E° = -0.14 V

A) +0.94 V
B) -0.94 V
C) +0.67 V
D) -0.67 V
E) +1.34 V