Software. With increasing automation and digitalisation the software sector will see a great scope in upcoming future.

I think software engineering because you can get jobs a lot more easier than for aeronautical engineering .It would be difficult for you to get job in private or it sector if you opt aeronautical engineering.......however you will get more paid jobs after doing aeronautical engineering.........so it depends on you ...in which field you have interests....may you got help from this!

Dear Prathamesh
Both having their own advantages and disadvantages. And by opting software you can get placements in college itself but while opting aeronautic it'll be tough to get placement but if once you get into public/private sector. You'll get more pay scale than in opting software.
All the best.