QUOTE (Admissions Adviser @ Jan 22 2011, 11:58 PM)
You can major in multiple majors, however when you apply you must select one and then when you are a current student you can add additional majors through the Registrar's Office. However keep in mind that the three majors you mentioned are all very different, so you will end up with many extra required courses and your four year degree could realistically take four additional years.
The other option you could do as a new student, is to apply as an Undeclared major. The nice thing about this choice is that at first, you can begin completing your general education requirements (which are required for all students) and choose your major by mid sophomore year. By starting your general education requirements, you aren't getting behind in any way and you can take classes in all the subjects you are interested in while at the same time fulfilling general requirements. This will allow you to get a taste of all your interests and not require you to pick just one.