You can take the exam, and you can apply for it at most, hehe, but it depends on your preparation. You can still take three exams at a time. Since you are a freshman (I don't know if you are a freshman), if you are a freshman, I think you'd better read it first, because you haven't learned a lot of content yet, and you are about to learn it. Although it is very basic, it may be difficult for you to understand it yourself. For example, you have to wait until you have finished the basic courses in college before taking the exam, as well as financial mathematics. It will be better to take the exam at the beginning of sophomore year, and you can take the exam for one and a half years at a time. I hope it helps you!