Dear aspirant,

It all depends on what exactly you want to achieve in your life.

If you are thinking of doing MBA after your BSc, you will have the liberty to work on an idea of your own like a science coaching center, or a product that can transform people's lives. You will have the knowledge and skills to do both - business and look at the science part of the business

On the other hand, if it is BBA to MBA you'll lack the core knowledge. It will come handy if you are so sure about your passion for business then go ahead and pursue BBA.

If you feel like you have a good scientific aptitude, to a science degree first so that you can decide on what exactly to build on.

Hope this helps.