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

Assertion A : Lithium halides are some what covalent in nature.

Reason R : Lithium posses high polarisation capability.

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

1. A A is true but R is false
2. B A is false but R is true
3. C Both A and R are true but R is NOT the correct explanation of A
4. D Both A and R are true and R is the correct explanation of A Correct answer