CAT 2025 objection window remains open till December 10, 11:55 PM on iimcat.ac.in. Candidates can challenge provisional answer key by paying ₹1,200 fee per question (non-refundable). Objections must include justification and correct option. Final answer key expected soon after with results December 22-23. This final opportunity allows aspirants to correct discrepancies before IIM shortlisting for WAT-GD-PI rounds starting January 2026.