Which of the following sets contain only isoelectionic ions?

Options

A. `Zn^(2+),Ca^(2+),Ga^(3+),Al^(3+)`
B. `K^(+),Ca^(2+),Sc^(3+),Cl^(-)`
C. `P^(3-),S^(2-),Cl^(-),Al^(3+)`
D. `Ti^(4+),Ar,Cr^(3+),V^(5+)`

Answer

b