Among the following series of transition metal ions, the one where all metal ions have $3d^{2}$electronic configuration is :-

Question

( A ) $Ti^{4+}, V^{3+}, Cr^{2+}, Mn^{3+}$
( B ) $Ti^{2+}, V^{3+}, Cr^{4+}, Mn^{5+}$
( C ) $Ti^{+}, V^{4+}, Cr^{6+}, Mn^{7+}$
( D ) $Ti^{3+}, V^{2+}, Cr^{3+}, Mn^{4+}$