D and F Block Elements

Let's determine the color of each aquated ion:
(A)Ni2+
In aqueous solution:[Ni(H2O)6]2+
This complex is green in color.
(A)⟶(V)Green
(B)Fe3+
In aqueous solution:[Fe(H2O)6]3+
This complex is yellow to brownish-yellow.
(B)⟶(III)Yellow
(C)Mn3+
In aqueous solution:[Mn(H2O)6]3+
This complex is violet or red-purple.
(C)⟶(I)Violet
(D)V4+
In aqueous solution:[VO]2+(vanadyl ion)

This species is blue.
(D)⟶(II) Blue
Final Matching:
A−V,‌‌B−III,‌‌C−I,‌‌D−II
Correct Option: D