The correct order of ionic radii of `Y^(3+)`,`La^(3+)`, `Eu^(3+)` and `Lu^(3+)` is

Options

A. `Y^(3+) lt La^(3+) lt Eu^(2+) lt Lu^(3+)`
B. `Y^(3+) lt Lu^(3+) lt Eu^(3+) lt La^(3+)`
C. `Lu^(3+) lt Eu^(3+) lt La^(3+) lt Y^(3+)`
D. `La^(3+) lt Eu^(3+) lt Lu^(3+) lt Y^(3+)`