Dera Yash,

If you are from science background you cannot join CA and if you are from commerce then you cannot join CS so irrespective of your stream. Choose wisely and also for doing MBA you just have to have a graduation discipline. 

I hope you got your answer.

Good luck.

Dear Yash, either CA or CS is not a course that can be studied because you have free time. These courses need your completenfocus and energy. And these are not short term courses like your software courses. These courses take few years to complete. And for CA Foundation alone, you need 4 months of field training even if you have to appear for the exams. CA and CS are professional courses with 3 levels each. They follow a schedule and cannot be completed by any means in 3 months.