The Following Excerpt Contains a Campus-Wide Announcement About an Upcoming

The following excerpt contains a campus-wide announcement about an upcoming concert at the University of West Georgia (UWG) . The Band Perry [a Grammy-nominated country music act] will perform live at the University of West Georgia Coliseum on Sunday, April 22, as part of its Purveyors of Performance Tour 2012. . . . Prices are $10 in advance or $15 on the day of the show for those with a UWG [Student] ID, and $20 in advance or $25 on the day of the show for the general public.
Source: "CAMPUS NEWS: The Band Perry Comes to UWG," UWG media (blog) , UWG Center for Student Involvement, http://uwgmedia.blogspot.com/2012/04/band-perry-comes-to-uwg_19.html, April 19, 2012.
Why would the Center for Student Involvement complicate the ticket-pricing scheme by using four different ticket prices?

A) to see how many students will support an on-campus event
B) to keep the general public out of the rowdier student section on the concert floor
C) to separate the concert attendees into distinct groups so that they can maximize profit
D) to ensure that enough people attend the concert so that they minimize any potential loss
E) to gauge student interest in case the concert must be cancelled and rescheduled to maximize profit