NEET 2024 Chemistry question on d- and f-Block Elements

1. A.
   $\mathrm{Gd^{3+}}$ and $\mathrm{Eu^{3+}}$
2. B.
   $\mathrm{Pm^{3+}}$ and $\mathrm{Sm^{3+}}$
3. C.
   $\mathrm{Ce^{4+}}$ and $\mathrm{Yb^{2+}}$
4. D.
   $\mathrm{Ce^{3+}}$ and $\mathrm{Eu^{3+}}$

[NEET 2024]