Which represents the correct equilibrium constant expression for the reaction below?

Cu(s) + 2Ag+ (aq)<>Cu²+ (aq) + 2Ag(s)
O Keq =
Keq =
O Keq=
O Keq-
-
[Cu][Agt]
[Cu²+][Ag]²
[Cu²+][Ag]²
[Cu][Agt]
[Ag+]2
[Cu²+]
[Cu²+]
[Ag*]¹