Dear Faiyaz, you fall under Type A Category of Maharashtra State Categorisation because you were born in Maharashtra. And to add on, because you have completed all your education in Maharashtra, it only strengthens you as a candidate of Type A Category.  To prove this, you will need to submit a document of proof of Domicile/Birth certificate indicating your place of Birth in Maharashtra. Along with this, you also need a set of documents which are common for all candidates. You can check that list here at their official page: https://www.imsindia.com/mba-entrance-exam/MH-CET/documents-verification-process.html