Hello

Doing a Masters in Business Administratin is actually a BSchool COurse and it is just a choice of an individual to persue it after Bsc or MSc or BTech.

BTech and BSc are both Bachelor courses (UG Courses) while MSc and MBA are both Masters Course (or Post graduation Courses). You can go for MBA even after completing BSc (you are not under compulsion to do MSc).

If you do MBA after BSc it will take you 5 years in total after which you can apply for Jobs as a Master in Business administration

If you do MBA after BTech it will take you 6 years (4+2).

It does not matter which stream you are from, you can opt for a MBA degree. For more information please click on https://www.careers360.com/courses/mba-master-of-business-administration