Pick that one which is a better FIT- fits with your values, aspirations, risk profile. You should have a good idea of this based on the interview experience and your own research. You will enjoy yourself better, perform better and not worry too much about outcomes.
Dont pick an option just because you want to end up in MBB or somewhere else in future. No guarantee that future will turn out the way you want. Focus on making most of the opportunity NOW. Good things will happen.
Have a look at this article for more detailed guidance for such questions- https://www.preplounge.com/en/articles/how-do-i-know-which-career-is-right-for-me
Congrats and all the best choosing.