There is a lot of ambiguity with regard to this question because of the way it is asked. How ever the answer should be the native state where one can produce one's native certificate or the study certificate..

The question is the state of eligibility for 15%AIQ seats. By asking like this one thinks that the 15%seats normally for out of state seats hence most students are committing mistake here. But, after ascertaining some information from the officials it is said that one should mention the native /local /study for more than 6yrs state to be mentioned  Because not all states are eligible for this 15%AIQ seats. Some states are having privilege to fill in the total seats with their own state people. Now a days except j&k. all the other states are covered for these15%AIQ seats. So, obviously, one should mention their own state as the eligible state. Those who have erred at the time of filling in their application  Can alter their options vide corrections during the time provided ie from Jan 14th to 31st Jan. This is only one time option. All the elevant mistakes can be corrected during the above period by logging in to their application by giving the password.

Some students entered wrong date of birth, some committed in typing errors. So all these can be corrected at this time only but that is the final. From there on no more corrections allowed.