Which One of the Following Reagents Is Capable of Oxidizing

Which one of the following reagents is capable of oxidizing Cu(s) to Cu²⁺ (1 M)

A) I^- (1 M)
B) Ni(s)
C) Ag⁺ (1 M)
D) Al³⁺ (1 M)
E) H⁺ (1 M)