Hi Candidate,

Since you have not clearly mentioned that which examination you had applied for and which Answer Key you are interested in, so I would suggest you the General pattern to deal with Answer Keys.

The Answer Key of any Entrance Examination is released by the conducting organization for allowing the Candidates to calculate their Score with the help of their Response Sheet. If you have still problems related to the Answer Key and have the proof that you have got the correct answer, then you can challenge the Answer Key.

Hope that this answer helps you.