B.A

As per my knowledge, The main difference between B.A. And B.Sc. In economics is that B.Sc. Deals more with practical knowledge in the economic field whereas B.A. Is more into theoretical aspects. So you have to decide which course you want to pursue. Best Colleges-
List of some of the Top and best private colleges in India are the following
LNM Institute of Information Technology, Jaipur
Vellore Institute of Technology, Vellore
Manipal Institute of Technology
SRM Institute of Science and Technology, Chennai
Dayanand Sagar college of engineering, Bangalore
Geeta University, Panipat, RV college of engineering, Bangalore
BMS college of engineering, Bangalore.

Dear aspirant, Glad to meet you. Dear aspirant, Apart from the General Studies, a considerable majority of the subjects from the stream of Arts are also included in the list for the Optional Subjects that UPSC allows to choose from. The subjects listed below, offered by the stream of Humanities are also allowed to be opted for the Optional Subject Papers by UPSC. History
Political Science
Economics
Geography
Sociology
Psychology
Philosophy
Public Administration
However, it should be noted that most of the schools/colleges and the boards/universities offer various combinations of the subjects given above (and also apart from them). Sociology, Geography, and Public Administration have been some of the most popular of the Optional subjects chosen by the IAS aspirants.