Given below are two statements: one is labelled as Assertion(A) and the other is labelled as Reason (R).
Assertion(A) : In p-block, when we move down in group, stability of highest oxidation state decreases.
Reason (R) : In d-block, when we move down in group, stability of highest oxidation state increases.
In the light of the above statements, choose the most appropriate answer from the options given below: