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The correct order of ionic radii of Y^(3...

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

A

`Y^(3+)+ lt La^(3+) lt Eu^(3+) 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+).

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