Which of the following ions has the maximum ionic radius?

Which of the following represents the correct order of ionic radius?

The reason for a cation to be smaller than its parent atom is

Which statement is correct regarding the atomic and ionic radii of potassium $(K)$ and bromine $(Br)$?

Of the following,the ion with the smallest ionic radius is

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 $ : $