What you should study is fully up to you, but these few tips will help you to chose you course.
- You should write down the courses you want to study, if you don't know what you want to study then write down the course your feel your should study. You should have the options written down so that you can see the option which will help you to decide.
- Do a little research about the courses you wrote down, make a research on the job demands and salaries, etc.
- You should write down your weakness and strength next to the courses you wrote down. If you take the course you are not good at, then you will end up changing your major during your first year or second year, and that will make you study longer.
- Fourth, study at the University that you feel comfortable, studying the University that you are comfortable will help a lot in studying the major you want to study. At some Universities they are too many students therefore it's hard to learn or perform because it is hard to interact with the lecturers during class.