See the fields or specializations, you are looking at, have a good career exposure ahead. Now it would be the fact you should focus on your interests.

BSc CS+MBA will be a great choice for you if you want to go for the management roles and if you want to get high paid jobs. The time frame for the course duration will be less and you will get enough exposure to get a higher position in corporate sector.

Now if you want to go for the job roles like coding/programming/web development etc, then I would recommend you to go for this course. Here, the demerits is that, you will be required to invest 1 year extra because CS is a 3 years course and MCA is also a 3 course. So you have to invest 6 years. Now if you are taking admission in some institute, which offers the 5 years program then it can be a great opportunity, although the salary structure will be not be that good, as it is in case after MBA.

Now going for CA course, have a good career exposure ahead, but you must be very much motivate for it. Because its not a fixed time course, it takes quite some time to qualify the examination. So until and unless you are extremely motivate, don't go for it.

For more information regarding MBA consider the link below:

https://www.careers360.com/courses/mba-master-of-business-administration

For more information regarding CA consider the link below:

https://www.careers360.com/careers/chartered-accountant

For more information regarding MCA consider the link below:

https://www.careers360.com/courses/mca-master-of-computer-applications

I hope this helps. Wish you a great day!