The selection is usually based on your performance in the interview and the entrance exam score; however, I find the interview to be a major factor considered for selection. You also need to have a good academic record and be willing to take up the science component of this course nevermind it's not a big deal, they teach you well, and from scratch if you don't have a science background.
Hope you find it helpful
let me know in the comment box if you are having any further doubts
thanks
Good Luck!
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