Out of $Cu_{2}Cl_{2}$ and $CuCl_{2}$,which is more stable and why?

• A
  $Cu_{2}Cl_{2}$ is more stable due to its $d^{10}$ configuration.
• B
  $CuCl_{2}$ is more stable due to the higher hydration enthalpy of $Cu^{2+}$ ion.
• C
  Both are equally stable.
• D
  Stability depends on the solvent used.