Choose the incorrect radii order.

The outer valence shell doesn't change but there are extra protons added, which causes the positively charged nucleus to attract electrons more tightly. The ionic radius rises for nonmetallic elements instead because there are more electrons than protons in their nuclei.

${\mathrm{Ti}}^{2+}>{\mathrm{Ti}}^{3+}>{\mathrm{Ti}}^{4+}$

greater the positive charge on the same element, greater will be ${\mathrm{Z}}_{\text{eff }}$ and less will be the ionic radius.

Hence, the option A is correct.