In general the difference between a BA and a BS is the type of coursework required for each. Typically a BA has broader and more varied coursework, while a BS is more focused on the major. So if you’re absolutely, positively sure of what you want to do, a BS might be the better choice. On the other hand, if you’re not sure or interested in lots of different things, a BA might be right. You will need to look carefully at the coursework required for the two degrees and do a good self-assessment: What do you want? What are you interested in? What’s your learning style? And so on. And do ask for help and input from school counselors and family. It’s a difficult decision; best of luck in your studies!