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Assertion : The radius of La^(+3)(Z=57) ...

Assertion : The radius of `La^(+3)(Z=57)` is `1.06Å` whereas radius of `Lu^(+3)(Z=71)` is `1.09Å`
Reason : Due to Lanthanoid contraction , paramanetism is least with `._(60)Nd` : If both Assertion and Reason are true and reason is the correct explanation of Assertion, If both Assertion and Reason are true but reason is not the correct explanation of Assertion, If Assertion is true but Reason is false, If both Assertion and Reason are false

A

If both Assertion and Reason are true and reason is the correct explanation of Assertion

B

If both Assertion and Reason are true but reason is not the correct explanation of Assertion

C

If Assertion is true but Reason is false

D

If both Assertion and Reason are false

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