Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Lithium salts are hydrated.

Reason (R) : Lithium has higher polarising power than other alkali metal group members.

In the light of the above statements, choose the most appropriate answer from the options given below :

1. A Both (A) and (R) are correct but (R) is not the correct explanation of (A) Correct answer
2. B (A) is correct but (R) is not correct.
3. C (A) is not correct but (R) is correct.
4. D Both (A) and (R) are correct and (R) is the correct explanation of (A)