I'm guessing everyone else is out enjoying their boats! I have to go to work in a few minutes, so... If your engine is contained under the cockpit floor and doesn't come into the back part of the cabin, you have an SC. If the cockpit is bigger, you have an SC. If the aft dinette seat tilts forward to access the storage/sleeping area beneath the dinette, you have an SC (the original 25 access from a lifting table/cover behind the dinette seat). Both are great boats. The original 25 has a slightly larger cabin, the SC has a slightly larger cockpit (by giving up a bit of cabin).
What year is it? Check your registration.
Enjoy your new boat!!
Best wishes,
Jim B.
On edit: oops, I didn't see that 2009. I thought the SC was introduced as a 2010 model. I understand your confusion. See the above attributes to determine.