BA is an Undergraduate Course and PG is a Post Graduation course. Both of them are different. If you have to study BA, it is called a Bachelor's degree. And in JMI, through regular courses, there are variety of courses that JMI offers in BA. Though you can check the complete list at: https://www.jmi.ac.in/studyatjamia/courseslist/regular , to give you an idea, the specialisations available in BA at JMI are:

1. Korean Language
2. Arabic
3. Economics
4. English
5. Hindi
6. History
7. Islamic Studies
8. Mass Media
9. Persian
10. Political Science
11. Sanskrit
12. Psychology
13. Sociology
14. Urdu
15. Geography
16. Turkish Language and Literature