Hello Dear,

BCA ( Bachelor of Computer Application ) is a vocational course related to computer. The eligibility to get admission in this course is the candidate must have passed 12th with PCM as main paper. If you want to pursue BCA in graduation without any issue of subjects then you should choose the combination of Physics, Chemistry and Mathematics as your main subjects and Computer Science as the additional subject. But its depends upon university the combination of subjects varies every state. For more details follow the link:

https://www.careers360.com/courses/bca-bachelor-of-computer-applications

Good Luck