Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The stability order of +1 oxidation state of Ga, In and Tl is $$Ga < In < Tl$$. Reason R: The inert pair effect stabilizes the lower oxidation state down the group. In the light of the above statements, choose the correct answer from the options given below:

A

A is true but R is false.

B

A is false but R is true.

C

Both A and R are true and R is the correct explanation of A.

D

Both A and R are true but R is NOT the correct explanation of A.