Option 1 -> Includes statement (D) which is incorrect as CRR and SLR are different concepts.
Option 2 -> Correctly includes statements (A), (B), and (C) which are all accurate about CRR, and excludes (D).
Option 3 -> Includes statement (D) which incorrectly states CRR and SLR are the same.
Option 4 -> Excludes statement (A) which is a fundamental correct definition of CRR, and includes incorrect statement (D).
Hence, Option 2: (A), (B) and (C) only -> Statement (A) correctly defines CRR as a percentage of deposits banks must keep with RBI. Statement (B) correctly identifies the purpose of preventing over-lending. Statement (C) correctly notes it's a legal requirement under RBI Act. Statement (D) is incorrect because CRR (cash reserves with RBI) and SLR (liquid assets like government securities kept by banks themselves) are distinct monetary policy tools with different purposes and mechanisms. -> correct