JEE Main 2024 Chemistry question

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)Both A and R are true and R is the correct explanation of A.Correct
• (B)A is true but R is false.
• (C)Both A and R are true but R is NOT the correct explanation of A.
• (D)A is false but R is true.