asked+about+registration+rates+5-27-12

from form on their website

I see that the early bird student rate registration for the conference is $400, and the poster presenter rate is $500. I am curious if it is possible to be a student as well as to present a poster, and pay the student rate of $400. Is this possible? Or do poster presenters pay $500 regardless of their status? Thanks for any help and information you can offer me!