Assertion-Reason questions are best handled by testing each statement separately before asking whether one explains the other.
Because the "previous year, assessed in the next year" scheme is the very reason the Assertion is true, R qualifies as the correct explanation of A.
\[ \boxed{\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}} \]Another way to approach this Assertion-Reason pair is to ask what would happen if the Reason were removed, would the Assertion still make sense on its own, or does it depend on the Reason to be understood.
The dependency between the two statements confirms that R correctly explains A.
Hence, the correct answer is Both (A) and (R) are true and (R) is the correct explanation of (A).
Match List-I with List-II: 