Hello applicant! All three courses are a good one, but I would suggest that electrical engineering is a better option. It has got a good scope as the demand for this is quite high. Also, IIT Dhanbad is a good place to study Electrical engineering.

Moreover, your interest also matters a lot. If you feel you are interested in any of these, then go for it, after all, it will be you who will be studying. So all the best!