JEE Main 2023 Chemistry question

For the reaction RCH_2Br+I^-\xrightarrow[major]{Acetone}RCH_2I+Br^- The correct statement is

• (A) can act as competing nucleophile.
• (B)The reaction can occur in acetic acid also.
• (C)The transition state formed in the above reaction is less polar than the localised anion.Correct
• (D)The solvent used in the reaction solvates the ions formed in rate determining step