What Is the Relationship Between the Standard Cell Potentials,E°,for the Following

What is the relationship between the standard cell potentials,E°,for the following two galvanic cell reactions?
I.2 Ag⁺(aq) + Sn²⁺(aq) → Sn⁴⁺(aq) + 2 Ag(s)
II.Ag(s) + 1/2 Sn⁴⁺(aq) → 1/2 Sn²⁺(aq) + Ag⁺(aq)

A) E°(I) = E°(II)
B) E°(I) = 2E°(II)
C) E°(I) = - E°(II)
D) E°(I) = - 2E°(II)