MBA Commerce

Hi
Both subjects are good, but it depends upon your interest in which field it lies. Taking maths or computer science is a decision to be chosen by you. Whatever you choose, I suggest you build a strong base on it for better future.
Best of luck!

Go for BBA as it will help you with your Masters degree.

If you are good at negotiations and communication then go for HR or marketing, if you are good at mathematics then you can go for finance. There are other streams available like operations, hospitality, etc. Do proper research before choosing.

Here is the comparison between Institute of business studies BHU and SMS Varanasi. https://www.shiksha.com/resources/college-comparison-212905-173552
It will guide you to choose better.

Your marks are really low of the previous, as you have mentioned, it is hard for you to get into XAT colleges.

Logistics and supply chain management.

There is no such institute which offer e-commerce MBA. In fact, many institutes are offering a degree in digital marketing, retail marketing and data analytics.

You have already chosen a PG course. What exactly do you wish to know? Which code are you referring to?

MBA in digital marketing and e-commerce is better because, nowadays, digital marketing has a good scope.

Yes, you can pursue MBA in any specialisation regardless of any commerce background. Students from various fields like B.Tech CSE, B.Tech mechanical and many other pursue MBA. But one must clear an equivalent test for admission. One must have a good percentile or rank in CMAT, XAT or CAT. In some private universities these test are not compulsory, they have their own test for eligibility and sometimes these CAT like test are used for giving scholarship according to rank and score.