Given below are two statements $ : $
Statement $(I) :$ The metallic radius of $Al$ is less than that of $Ga$.
Statement $(II) :$ The ionic radius of $Al^{3+}$ is less than that of $Ga^{3+}$.
In the light of the above statements, choose the most appropriate answer from the options given below $ : $

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