For $Cu_{2}Cl_{2}$ and $CuCl_{2}$ in aqueous medium,which of the following statements is correct?

• A
  $CuCl_{2}$ is more stable than $Cu_{2}Cl_{2}$
• B
  Stability of $Cu_{2}Cl_{2}$ is equal to stability of $CuCl_{2}$
• C
  Both are unstable
• D
  $Cu_{2}Cl_{2}$ is more stable than $CuCl_{2}$