BCA

You are eligible for admission in BCA at Chandigarh University with 60% marks as the university requires you to have scored more than 50% in your senior secondary education from a recognized board. More so, along with admission you can also apply and appear for scholarship exam, CUCET, with offers up to 100% scholarship worth Rs. 27 Crores.
CUCET is Chandigarh University Common Entrance Test which will avail you scholarship on your course fee. You can learn more on their official website for CUCET, or Chandigarh University's official website, or you can also relate to this article https://www.shiksha.com/university/cu-chandigarh-university-45668

Both MBA and MCA are completely different fields. MCA will give you indepth knowledge about your subject which you have already done. It will help you enhance and get more information about your subject. If you're interested in your subject and would like to pursue it further, MCA is ideal for you. While, MBA is completely different field which enhances your overall knowledge and all about managing things. If you're interested in changing your career path or if you're interested to have a managerial position, MBA is ideal for you. MBA from top B-School will land you in a very good package like IIM being avg of 17L and other top B-School avg 10-12L. So, if you want a progressive career MBA is solution to your answer And MCA if you're keen and deeply interested in your subject matter. If u perform better and get around 98+ percentile, you surely will get admitted to Iims.