I believe you will need to narrow the focus much more than that. If you're only in your second year, then your courses should still be fairly general. Once you get into 3rd and 4th year, your courses will become more specialized and from this you will see what areas you are most interested in. Then from this you can look at what professors specialize in this field, and near the end of your undergraduate degree, you can send them heartfelt letters (emails) about your passion for this area and ask if they have any graduate positions (ie funding).
That's how I did it anyway. In my opinion, it makes a big difference going into something you enjoy and are passionate about, rather that just going into a field because the prof has a position open.