Statement $1$: The equivalent mass of $Cu$ in $CuO$ is $63.6$ and in $Cu_2O$ is $31.8$. Statement $2$: Equivalent mass = $\frac{\text{Molecular mass}}{\text{Valency}}$

• A
  Statement $1$ and Statement $2$ are both true,and Statement $2$ is the correct explanation of Statement $1$.
• B
  Statement $1$ and Statement $2$ are both true,but Statement $2$ is not the correct explanation of Statement $1$.
• C
  Statement $1$ is true,but Statement $2$ is false.
• D
  Statement $1$ is false,but Statement $2$ is true.