Hello Sourabh

As your theory is more good over practical than I'll suggest you to do MBA because in MBA you won't need to study hard the practical subjects and solve numerical problems.

In MBA you just need to have some theoretical knowledge with soft skills like good communication and leadership skill.

Also if you are interested in company laws and other financial work you can go for CS.

For CS you didn't need to give foundation entrance as you will be graduating this year but for mba you need to appear in entrance exams like CAT, Cmat, Xat , GMAT,mat etc.

For detailed information you can visit following link.

https://bschool.careers360.com/exams

Hope it would be helpful for you.