One, what would you rather be doing? You're young you have time so you cannot go wrong in either direction.
Two, what opportunities are available to you? Can you go to a really good MBA program? Is there a start up you are going to join that you are passionate about? Are you going to start your own business? If so do you really know what that entails?
So my advice analyze your opportunities, decide what it is you really want to do, but unless you have a killer idea and some people to help both technical, marketing, and business wise don't start your own start up yet.