The correct order of ionic radii of Ce, La, Pm and Yb in +3 oxidation state is

Options

A. `Yb^(3+)lt Pm^(3+) lt La^(3+) lt Ce^(3+)`
B. `Yb^(3+) ltPm^(3+) lt Ce^(3+) lt La^(3+)`
C. `Pm^(3+) ltLa^(3+) ltCe^(3+) lt Yb^(3+)`
D. `Ce^(3+) lt Yb^(3+) lt Pm^(3+) lt La^(3+)`