The official answer key for various exams, including IEO and similar competitive exams, is usually made available on official websites after the exam, where you can download it.

For specific exam answer keys like SET C for the November 28 exam, I recommend visiting the official site of the exam organizer. Often, these answer keys are published on the official exam or educational websites like Careers360, or the examination board's portal directly. You can check them for any updates related to the answer key and verify the results. If you're still unsure, checking with your institution or exam authority might also help.