Difference between Cal L+S Undec and Undec/Pre-Business Admin?

<p>I re-read the Berkeley Freshman Admission handout again tonight, and one part caught my eye:</p>

<p>"If you are interested in studying Business Admin, you may apply to the College of L+S as an "Undeclared/PBA" freshman."</p>

<p>uh oh... I am interested in studying Business Admin (I think... I want to go to Haas Undergrad and then onto finance) but I applied as just undecided in L+S. Is there a difference between regular undecided and undecided/PBA? Does the undec/PBA one give me a better chance of going to Haas's Undergrad program? And if so, can I still change my major?</p>