Hii Harshith...I think you can't do that so check while filling the options. Hope this helps you.

Hello, 

Yes absolutely u can reject but u will have less chances to get seat in further counselling because its already third counselling.

Keep up hope

Best regards

All the best for your future and successful career.

hello sir

yeah you could easily reject the seat just don't appear for the document verification it will get automatically cancelled or you could also cancel it if you dont want it