Hello.
Here first you need to know the difference between these three branches , these all are BTech course so it is known that it will be 4 year UG program , now BTech in Information technology branch designate with the study of software as well as quite hardware approach of the system, whereas artificial intelligence side is not a separate branch here it is one of the specialisation in Computer Science branch here the main focus will be on the software approach of the system and main subject will be machine learning along with this some basic subjects will also be there and at the last data science is one of the branch of BTech in actual it is called  big Data analyst and Data science , here mainly you will be dealing with the advanced programming concepts and main focus will on machine learning along with this data analyst knowledge will also be given to you , here mainly you work will be with algorithms , if you want to have a glance over deep knowledge about BTech in data Science then kindly refer below link:
https://www.careers360.com/question-which-course-is-best-btech-data-analysist-or-bca-in-data-science-or-bsc-in-data-science
Now coming to the point that which one should choose among all these so it is purely over your choice because if you want to have knowledge of machine learning along with some other concept of CSE so go with artificial intelligence specialisation while if you wanna have traditional knowledge of computer hardware and software so go with information technology branch and if purely you want to be data scientist with full knowledge of creating models the Data science branch would be great option for you.
Best of luck.

Dear Aspirant,

If you are very good with mathematics and probability and functions then you should go with AI and data science as you'll make a very good career in that field, however, if you are not comfortable with higher mathematics functions, probabilities, etc then you should go with Information technology, IT is also a very good btech stream and have very good careers.

Hope this helps. Thank you.