Hiii..
It depends on ones personnel choice of which field he wants to go to. If he is interested in computer related problems then cs/it will be best for him. If he is interested in robotics then mechatronics/mechanical will do and the list goes on and on. All engineering fields provide a lot of options to a student and so It depends on you then anyone else plus one can change his field after first year if you want in some colleges.

Gateway Education offers a wide range of technical and professional courses that help the students in making their career shine. We have colleges and institutes that have a great staff of trainers and faculty that are providing students with best of their knowledge and experience and this provides the opportunities to the students to take their career to new heights. Also, our placement cell is best among the other colleges that provide the students to get placed in top MNCs
Hope you get it...

Hey,
It depends on you more than anything ,it depends on what you find interesting and exciting .
If you like solving computer related programming problems ,go for computer science .
If you fond robotics interesting ,take mechatronics .
So just go through different fields and information related to those fields before you apply for it.
Each engineer would give a personalized answer for this question so it basically depends on you more than what others think .
Hope it helps!