Given below are two statements :
Statement $I$: $S_8$ solid undergoes disproportionation reaction under alkaline conditions to form $S^{2-}$ and $S_2O_3^{2-}$.
Statement $II$: $ClO_4^{-}$ can undergo disproportionation reaction under acidic condition.
In the light of the above statements,choose the most appropriate answer from the options given below :

• A
  Statement $I$ is correct but statement $II$ is incorrect.
• B
  Statement $I$ is incorrect but statement $II$ is correct.
• C
  Both statement $I$ and statement $II$ are incorrect.
• D
  Both statement $I$ and statement $II$ are correct.