Given below are two statements:
Statement $I$: The metallic radius of $Na$ is $1.86 \ \mathring{A}$ and the ionic radius of $Na^{+}$ is lesser than $1.86 \ \mathring{A}$.
Statement $II$: Ions are always smaller in size than the corresponding elements.
In the light of the above statements,choose the correct answer from the options given below:

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