The equilibrium constant of the reaction: Cu(s) + 2Ag+(aq) -) Cu₂+(aq) + 2Ag(s); E° = 0.46 V at 298 K is
(a) 2.0 x 10¹⁰
(b) 4.0 x 10¹⁰
(c) 4.0 x 10¹⁵
(d) 2.4 x 10¹⁰